Here is my explanation for the rankings I posted earlier:
1. Boston Celtics
Just a dominant offence and good enough defence to credibly defend most teams in this draft. I think a Nash-led offence with KD as his sidekick will shred any defence that isn't elite in this format, and the supporting cast that Who picked (besides his SG rotation) is really good as well. I see holes in their team, but I think their offence will be so good that it doesn't matter.
2. Milwaukee Bucks
I liked how their pieces fit together as I started comparing them to other teams - I had no idea how funky the fit on some teams were. The team just works on both ends of the floor - Malone isn't a defensive monster as a big man, but he has Giannis as a help defender, and their offence is good enough with Malone, Ginobili and Giannis being the main pieces (I somewhat question the offensive fit of Giannis and Malone, but it shouldn't be too much of an issue with Malone's ability to space the floor somewhat). Their bench also has a few nice plug and play pieces - I like Rose as a bench guard, Tatum is an excellent backup forward in this format and Ibaka is a nice Malone backup to keep on bludgeoning opposing frontcourts.
3. Miami Heat
Another team that I thought was well built. They're strong on both ends of the floor with CP3 quarterbacking an offence with excellent finishers in Love and Howard as his target men and they have a good second creator who can move off ball in Butler, while their defence has multiple plus defenders surrounding an elite rim protector who's mobile enough to defend the perimeter. Love is a defensive liability in some matchups, but they have the ability to play Josh Howard and AK47 as their forwards against teams that can take advantage of Love.
4. Los Angeles Clippers
Curry next to an excellent wing creator in Grant Hill already spells trouble for most defences, but Gouki managed to find an excellent shooter in Redd and a versatile big forward in Brand to make that offence even more potent. I don't love the fit of his team (I think he should've went for a guy like Sheed to start at C for him instead of Noah and gone for Miller instead of Redd), but it still works with how portable some of his pieces are + how versatile his bench is.
5. Brooklyn Nets
This team really surprised me when I started poring over the rosters and posts. I really like the McGrady/Davis duo and Dons' decision to bench Yao (as sad as it was for me) was an excellent move. The Matrix and Davis cover Griffin's subpar defence well, and even though I'm not a fan of Andre Miller/AI/CJ as PG options, I think McGrady will take on the bulk of PG duties to minimise the burden of PGs on the team. Their bench (a recurring theme among the top teams) also allows them to shift their lineups against different matchups: I love Battier as a backup SG/SF, CJ/AI are interesting bench guards who can explode on offence and having Yao/Ratliff as their bench Cs is downright terrifying for more traditional teams.
6. Oklahoma City Thunder
Yoki went full alpha with bold 1st and 2nd round selections that dug himself a deep hole, but he made a furious comeback later on with savvy drafting and outright fleecing. Getting a volume scorer and an elite playmaker in Westbrook works wonders for their offence: it sounds weird considering that these players usually don't lead great offences, but Yoki's team desperately needed someone who can shoulder a heavy offensive load - Pierce and George are great wing scorers who are strong creators as well, but they weren't guys who could quarterback a good offence. Getting Russ raises the floor of their offence to a level where they're respectable in this format, while their defence will be in the upper echelon with one of the best defensive centres in this draft surrounded by versatile forwards and a cannonball of a guard.
7. Indiana Pacers
It took me a while to come around on this team, but I can see how it will win games in this league. Dirk's resilient scoring game will buoy the Indiana offence while guards like Tony Parker can break already-stretched defences with his ability to weave through tight spaces (the thought of a Parker-Nowitzki pick and pop is terrifying). Embiid is an awkward fit offensively, but he provides a monster low post option for Indiana to go to and isn't a complete zero at shooting (so he can stand in the corner when Dirk is initiating his high post offence). The defence has issues, but swapping out Hayward for Iguodala and Parker for Wall (who can still run the pick and pop with Dirk) would stop the bleeding just enough that they can get by the teams below them consistently.
8. Dallas Mavericks
I think their core three is excellent, but I dislike how they went about assembling the supporting cast. I don't like LMA's fit on the team at all, he's average defensively and takes the ball away from Kawhi/Doncic on offence. Mutombo is nice, but him and LMA in the frontcourt is just asking for opposing teams to shred them apart in the pick and roll. The bench pieces aren't all that inspiring either - Simmons is playing out of position as a PG (he should've been their starting PF) and there is no bench big who can guard both the post and the PnR. But their versatile offence with intriguing offensive pieces surrounding an MVP quarterback and an MVP calibre two way wing, as well as strong wing defence and rim protection is dangerous enough to land them here.
9. Utah Jazz
A team that I see had a lot of thought put into it but sadly didn't have enough to overtake the teams ranked ahead of it. Shaq is the best offensive centre ever (only Kareem was his contemporary imo), but I don't see this team giving him that secondary wing creator to boost that offence into transcendence. I love Reggie Miller, but him and Peja at the wings with Kidd as the PG limits O'Neal to doing floor raising rather than ceiling raising, and the bench mob doesn't really have a guy who can help out either (Monster Mash might be the answer to their offensive woes if he starts at PF, but the offence would still lag behind the best offences in this format). With a good but not great offence and problematic defence, the Jazz fall to 9th on my list.
10. Philadelphia 76ers
I like the idea of just drafting dependent talent for LeBron to supercharge, but having only Billups as your other creator in the starting lineup spells trouble even for the GOATiest of players. Drafting 3 power forwards instead of a centre who can defend the perimeter when Gobert gets run off the floor against five out offences also doesn't do them any favours. The bench is decent but I don't see it filling the holes in the starting lineup, so the 76ers plummet to number 10.
11. Denver Nuggets
I simply don't see how this offence competes against other teams in this format. The defence is top 3 imo with Duncan and Draymond in the frontcourt as well as a backcourt of Payton and Rip, but any offence that relies on the post scoring and kickouts of prime Tim Duncan is not going to win in this format - those early 00s Spurs teams were historically good on defence and just good enough on offence in their title runs. Kyrie alleviates this problem somewhat, but he's not an elite offensive centrepiece in this format and will make the perimeter defence with Melo at SF shaky.
12. Los Angeles Lakers
This was my PM to Celtic Fan Forever regarding his team:
Absolutely. I simply don't think that your offence is as good as it looks like on paper (fit issues), and the defence is problematic. I like big men like Jokic and Webber on offence, but the issue is that you're pairing them together and asking them to play with a ball dominant offensive engine in Kobe + a point guard who also needs the ball to maximise his offensive value in Lillard. I understand that Kobe and Lillard can move off ball a bit, but relegating both of them to an off ball role to maximise the offensive value of Webber and Jokic is madness: Kobe is one of the finest offensive engines in the history of the NBA (just a rung below the offensive GOATs imo) and Lillard has All-NBA impact solely with his offence. The ideal way I see your offence run is to give Kobe the reins and have Jokic act as his #2 (ala Pau Gasol), but this would relegate Webber to a stretch 4 role that's mainly tasked to finish scoring opportunities created by Kobe and Jokic, and that's not his strength at all. Lillard would fare better due to his shooting and off ball movement, but that's not his forte either. I see the argument that Webber would be able to provide value with extra passing, but that's meh value for a guy who you'll have to cover on defence (Webber is average at best on that end), ditto for Lillard even though he brings a couple of extra traits like floor spacing and quick burst isolation scoring.
So yeah that's pretty much it, I'm not a huge fan of how your pieces fit on offence and I really don't like your defence (you're basically asking Metta to cover 4 other guys in this format with your starting lineup).
13. Houston Rockets
Just an awful fit imo. Wade and Harden are incredibly ball dominant guards whose games don't fit together, and Houston exacerbated issues by hoarding power forwards and shooting guards in the first nine rounds. They had some really good picks in the final few rounds, but the damage was already done.