Random observations:
H horizontal dolphin SEEMS to be slightly slower, as I've seen it not combo from a f.S where I feel it normally would.
Horizontal dolphin force breaks seem like they could be a decent (occasional) rushdown cover, for those hard to reach characters.
Hoop dolphins have a greatly extended hitbox for first hit, looks like it's all the way out to the end of her anchor when it's on the ground.
6P...can be charged like 6HS??
Also, I can't remember ever seeing anyone FRC a vertical dolphin late in to the move. Maybe you can't do it after the dolphin passes a certain frame, or just can't do it at all on the S dolphin. Seems like S vertical dolphin FRC (while they are on the ground) would lead to an easy buttload of damage with more S vert dolphins, but I haen't seen it.
Edit: Forgot the most important one. Her new voice is VERY, VERY cute.