Yeah now that she's fairy type I'd like to see some effects added to her a moves, I dunno maybe some pink sparkles like zelda's
EDIT: Also
I'd like them to remove rollout and pound, move sing to Neutral B and make it more useful and restore rest to its former glory. Then make it's up B an actual recovery (maybe using fairy wind to create a pink tornado under it which you can then control for a short time) and giving it a fairy move for it's side B (maybe dazzling gleam, stunning opponents) and then making its final smash moonblast.
The Jigglypuff line does not learn Fairy Wind.
My personal changes to Jigglypuff would be..
1) Using Sing in the air will make Jigglypuff spin upward in a arch, can't grab ledges but still a good last resort for getting back on stage. Jigglypuff now shoots out song notes in all f directions, they travel as far as Ness's PK Fire, the farther you are away the less you'll be asleep for.
2) Pound is now Doubleslap, It's exactly the same only Jigglypuff will use it 2-5 times, Jigglypuff stays in the air just a bit longer with each slap
3) Rest is now Disarming Voice, it's quite like sing except for the fact it does damage (8%) it's got more range than sing and the song notes go half as far if someone is holding an item they'll drop it.
4) Jigglypuff comes with her own Pokemon Trainer, but not the traditional one,
Oichi from Nobunga's Conquest cheers Jigglypuff on!
...I'm not quite confident in my changes really but I'd REALLY like to see that 4th one happen.