The fact that Nash will find a way to properly distribute the ball is the only true hope I'd have as a Suns fan wishing for a title. Well, that along with the fact that Amare Stoudemire was getting eaten alive by every decent big he faced this year, and he's more of a natural 4 so his comfort level should rise. However, I haven't seen Shaquille O'Neal "protect the paint" defensively in 2-3 years; perhaps a bit longer. If Phoenix's plan for Shaq is on the defensive end, then he's going to be getting into even more foul trouble than the 2005-2006 first round series vs. Chicago, and that's a hell of a lot.
Also, Shaq's weight hasn't been a major issue in recent years, IMO. I think it goes overstated at times because people, especially the media, are accustomed to blaming his issues with his weight. Hell, even I joke around and say "Fat slob" or something of that nature. The problem with Shaq is that he doesn't have any lift. He seriously has no lift at all.