Giving up a 2018 lottery pick wouldn't be wise. But giving up IT-Crowder-filler would be a good deal for the C's (chemistry issues aside).
There seem to be 3 schools of thought in this thread:
1. Kyrie > IT
2. Kyrie > IT, but marginally so throwing in Crowder makes this trade a net loss
3. IT > Kyrie
Im in camp #1, but I can understand why people would think #2. However, those in #3 need to take off the green tinted glasses, IMO. IT is amazing, yes, and what he did with this squad was awesome. But he is hands down, the worst defender in the league. That might not be so glaring in the season but it really sticks out in the playoffs.
Even Avery Bradley said Kyrie is the hardest player to guard. Not steph, not IT, not Westbrook.
As for those saying Kyrie couldn't win before Lebron arrived, well, it begs the question: how young was Kyrie then? Is it not possible that MAYBE he's improved in the past 2 years? The dude hasn't even hit his prime yet and he's been a 4x all star in the past 6 years.
Being the toughest to guard doesn't make you a better player, though (not even a better offensive player). It probably means that you're the better isolation player (and there's no doubt that Kyrie is one of the best iso players in the NBA), but Kyrie's ability to create for others shouldn't scare anybody. IT is light years ahead of him in that regard.
As for defense, you can't call IT a defensive liability without acknowledging that Kyrie is as well. The myth that Kyrie can become a passable defender when engaged just isn't true. He can be a better defender than IT when engaged, but it's still far from passable defense. Kyrie gets slight favor on that end of the court, but not enough to make up for his glaring inability to create for others.
Truth be told, no one here knows if Kyrie could bring a team to the playoffs by himself (and I agree that basing things off of his first couple of seasons is useless, as it is for all young players). What I do know, though, is that IT has never missed the playoffs while acting as the #1 option for his team, and brought us to the ECF last year. Not many other players can say that. Yes, his defense is atrocious, but he's one of the best in the NBA on offense and has a net positive effect when he's on the court.
So would Kyrie be an upgrade? Maybe. Maybe having a strong coach like Brad would focus him on defense and get him creating more on offense. I might even trade IT+Crowder for him (although I think even a straight IT/Irving swap would lead to a worse team this year). But there is absolutely no way I would even consider including a Brooklyn pick.
Agreed on not including a BKN pick (or a LAL/SAC pick imo).
That said, AB's statement stands out to me because it means if you need a bucket, this guy can get you a bucket, which is huge come playoff time. I bring up offense (particularly 'getting buckets') because that is IT's trump card. It's what makes him worth a max contract.
I'm not entirely sure where this Kyrie can't create for others notion is coming from though. If I'm not mistaken, Lebron handled the lion's share of the playmaking duties in Cleveland. Kyrie's "role" was to score (granted, he's definitely got a score-first, pass-later mentality). But for example, Kevin Love is a great passer for a big but you probably wouldn't guess it based on his low assist numbers in Cleveland. There's a difference between someone who "can't do it", and someone who doesn't do it (presumably by design).
Regarding defense though, I've never seen any player as abused as IT in the playoffs. Kyrie isn't a great defender, but teams aren't able to exploit him the way they do IT.
As for playoff success, I really feel like it's an unfair argument because it's tricky business attributing team success to one guy (especially in our situation where we apparently have a mastermind of a coach and a deep roster of talented role players in need of a star). Sure, IT hasn't missed the playoffs, meanwhile a guy like Anthony Davis has, but that doesn't mean I'm declining an IT-Crowder for Anthony Davis trade.