Yeah, sing has to stay in the moveset in some way. UP + B is impossible to balance because of rest. Either sleep lasts long enough and making rest absurdly easy to land, or it doesn't last long enough and nobody uses it (like previous games). I like the idea of moving it to a final smash. Besides that change, though, I want her side + B and rest to stay the same (well, buff rest back to melee's killing power).
I don't care about her normals much, but I do like the way fair and bair play with her side + B and floatiness.
Also, I see what people are saying about jiggs and kirby as far as jumps, normals, and body shape being similar. They really don't play at all similar though. Jiggs is always in the air poking people with her good aerials, waiting for a chance to rest, or edge guarding. Kirby is more limited than her in the air, playing more for edge guarding with bair or spiking with dair. Kirby has a better ground game, and rather than floating back and forth with spacing in the air, he's more likely to jump once or twice, land, then try again.