All Melo has to do is move without the ball and not try to dominate it so much. Move, come off of screens and get in immediate scoring position on the block or a spot for an open jumper. Yeah, sure he can iso sometimes to change up the sets to give different looks.
Lin will hopefully help with this as he'll be doing much more distributing than shooting when Melo and Amare get back for you guys.
Need to keep up consistent D as well, but I'm not even sure that's in this current team's DNA.
Now if we're talking about the Knicks of yesteryear(and the older rules) with Ewing, Oakley, Harper, Mason, Starks, Anthony, Doc, then it's a different story. But those guys have D ingrained in their DNA despite eras and rules.