So, a Peach main produced an interesting video:
Essentially, knockback and weight based knockback on her first hit of up B is obnoxious. The purpose is to help force players into the next hit. B-reversing the move forces players to get hit by that hit alone, and boom. Big reward.
I reviewed the numbers for first hit of up B real quick. (BKB = Base Knock Back, WBKB is Weight Based Knock Back, KBG is Knock Back Growth)
Peach - 180 (BKB) / 160 (WBKB)
ZSS - 150 (BKB)
Reminder that Peach's final hit of up B is a decent kill move and its got 90 BKB / 100 KBG. ZSS' last hit is 50 BKB / 220 KBG. So, obviously, boost kick is favored as percent goes up.
Here's what I'm getting at: we might want to check out the potential application of reverse up B as a finisher. I have no idea if it works... I'm at work. I also don't know if we have set ups for it. But, if say... we figured out how to integrate it into the B&B... or something... the kill would depend on one hit, not 8.
Some interesting thoughts for us to look into, potentially.