I know it's being discussed in other threads, but wanted to make a new thread.
If the Knicks were willing to move Carmelo for Asik and Lin as the heart of the deal (might have to include others like Greg Smith, Donatas, etc.; even as a 3-way if they don't want Lin back), for Carmelo, would you do it?
Naturally, with Carmelo, your offense goes from best in the league to potentially historically dominant. Talk about a stretch '4'. You now also have a postup threat as well. A lineup of Melo, Parsons, Howard, Harden, and whomever at point guard would be close to unguardable. On the flip side, you could see issues over who dominates the ball at the end of the game.
Obviously, you're not doing yourself any favors on the defensive end. But with that being said, I don't think Melo is necessarily a downgrade from Terrence Jones. And also, while defense is this team's biggest problem, I don't think you're fixing that through a major trade (especially when probably your best defender on the team--Asik--is your main trade chip.) Their defensive problems stem from coaching schemes; they need a backup wing defender because Parsons-Harden aren't being traded anytime soon...and you don't need Asik/Lin to acquire one of those.
The most underrated aspect also would be that you'd have a fresh slate in the summer if you decided not to bring back Carmelo. That'd give you a chance to look at Bosh, if the Heat break up.