to the first part
I freaking LOVED chain of memories. I played through BOTH stories 2, maybe 3 times so yeah I'd TOTALLY play through it again. Don't ask me why, I just do.
second part:
I'd buy it no matter what system it came out on, first off. Waving my hands around to do stuff has already gotten old for me though...and I wouldn't wanna have to do that again in another 30+ hour game.