Number 3 is just as hard as 1 and 2- but it's the way that every championship team (except for Detroit) has acquired a top 5 player in the last 20 years. They drafted that top 5-10 guy and then got another top 5-10 guy to support him. (well Dirk did it on his own).
I think Wade is probably the only top 5 player drafted since Duncan that's been a key piece of a championship for the team that drafted him. You say every team has drafted a top 5 player and added a top 5-10 player to support him. In addition to Detroit and Dallas none of the Kobe or Shaq led teams or the Celts won like that.
I said drafted a top 5-10 player, not a pick. You could change the word from player to pick and make it top 10. Let's include finals teams over the last 20 seasons.
Pierce (top 5 -10 player and pick) added KG and Ray both top 10 picks
Kobe (top 5-10 player) (if he went to college he'd probably be top 10 instead of 13th it's fair to say?) joined by Shaq, then joined by Gasol and Bynum. Not sure where Gasol + Bynum were drafted but Bynum was high school and Gasol was euro.
Wade (top 5-10 player and pick) Shaq and then added Lebron both top 10 picks and players
Lebron(top 5-10 player and pick) went to finals with cavs
Shaq (top 5-10 player and pick) went to finals with Orlando and had penny hardaway (top 5-10 player and pick)join via draft ( in which magic gave up webber lawl.
Duncan (top 5-10 player and pick) drafted joining D Rob. Then joned by Parker + ginobli both euro.
Howard (top 5-10 player and pick) drafted by Orlando not much help
Dirk(top 5-10 player and pick) drafted by Mavs not much help except defensive player of the year Tyson chandler (top 5 pick)
Durant (top 5-10 player and pick) joined by Westbrook and harden via draft (Top 5-10 picks)
Seeing a pattern?
Sorry spelling is bad and can't be bothered looking up draft positions of Bynum/Gasol I'm on ipad, complete torture to type.
That's well under 1 player per draft. Also, if you're talking top 5-10 player, not draft position, you should throw Rondo in there since he's a top 5-10 player in the postseason when he's healthy (and was in 2010 when we got to the finals).
Qualifiers, much? 
But I actually agree with you, so following that model, who's the other top 10 guy we acquire to pair with Rondo?
Nobody knows that for sure right now. What I find so ironic on these threads is that the pro-tankers often demand to know who that guy is, otherwise the only solution is tanking.
Of course, the pro tankers don't know who that guy is either. They just want to see their team lose.
Yes, I just want my team to lose. No context necessary at all.
I certainly don't demand to know what top 5-10 player we can get in free agency or through trades but then again, I'm not advocating going down that avenue. Isn't the onus on the person making that kind of claim to at least attempt to offer some possible scenarios? Otherwise, it's just all pie in the sky wishcasting.
Presumably, a future championship is going to require the Celtics acquiring this unknown top 5-10 player. Given this franchise's history with attracting top free agents and the current assets we have in the way of players and draft picks, I think getting a high pick in what's considered a loaded draft seems like a more substantive way to acquire said player.