I've thought about this before. Here are the changes my Daisy idea has.
Down b has a 90% chance to pull the Parasol item. A 5% chance to pull a Mr. Saturn, a 5% chance to pull a fan.
Her up b is like a better Jiggly Puff up b, it puts the opponent to sleep long enough to punish them. It has slow start up and is very punishable however.
F tilt has less knock back but more knock back grow. It sends straight up and has less end lag to make it a useful combo extender.
Up tilt is Zelda esque and is another useful combo extender.
Down smash is weaker.
Dash attack sends at an even more favorable angle for comboing spacies than peach's.
Float time is reduced to 1.5 seconds.
Neutral b is the heart ring from Double Dash, similar to Ness's down b. Lag is cancelled if you successfully use it on an energy projectile.
Up smash is buffed. It's only the strong hit.
F smash alternates between Tennis Racket and Frying Pan.
The main idea behind this move set is that you need to decide when to pull the Parasol. Without it Daisy's recovery is very mediocre. It's basically just Peach's with a worse float and no up b. Once you pull the parasol however, you lose Daisy's superior tilts, forward smash, and dash attack, since those are replaced with the Parasol dash attack, tilts, f smashes, which are all bad. You trade off a good recovery for a better combo game basically.
Even with the parasol, Daisy has almost no vertical recovery. She's much more of a glass canon than peach.
