I know I'm biased toward Amare, and my opinion probably isn't too respected on this board, but signing Amare would be awesome for the Suns. Here's why:
1. The guy can still play. I mean, he can REALLY play. I live in New York, so I watch every game, and before the Knicks fully committed to tanking about a month ago, Amare was the Knicks best player. He was only averaging about 13ppg, but every point he got, he created by himself. I've always rolled my eyes when some announcer says the old "this guy worked out with Hakeeem" about anyone else (Dwight Howard, anyone?), but Amare took those training sessions, worked on them, and incorporated a lot into his game. His moves are quick, incredibly fluid, and powerful.
2. Amare will embrace any role he is asked to do. It's actually kind of odd how little stink he puts up when he is forced to play 15 minutes a game for no reason. Most guys in the league would be somewhat upset when Quincy Acey is given his starting job at the beginning of training camp. But Amare said all the right things, worked hard, and quickly won his starting job back after about 10 games. Same thing happened last season, and the year before. And if he isn't bought out, I'm pretty sure he'll be able to outplay Lou Admudson enough to win back his job again.
3. Amare's knees aren't that bad. Sure, he's had 17 surgeries on them, but he's still really athletic. His first step is quicker than 80% of the bigs in the league, and on the pick and roll, he hasn't lost much of his vertical. His athleticism has diminished when he has to jump from a standstill, but his touch around the basket is so good that if there's anything less than maximum congestion in the lane, he can just pivot and drop it in with a baby hook or fadeaway, no problem.