There definitely was a bit of a pro-diddy ban theme going.
Most people agreed that up throw up air KOing at 50% sent him way over the top and most players were open and honest when they said 'maining him until he gets nerfed or banned' or in some cases 'not playing the game until Diddy gets nerfed or banned'. At the same time it took 2 months for the general populace to realise Diddy had up throw up air KOing at 50% (due to Apex; but it was already in heavy usage in Diddy dominated scenes like West Coast).
This was before we knew patches were a thing. No one ended up banning Diddy (from what I'm aware of), but all the building blocks were there.
Most people agreed that the character was likely to kill the game, at least in hindsight.
To be fair - brand new game, every character is getting focus because we don't know what the game has to offer. People weren't focused on Diddy like Bayonetta has been the focus until Apex, and that's when things started getting heavy quickly and within a month of it we got a balance patch. I do know quite a few names who threw a fit when there were diddy ban suggestions made (M2K being one, but so were basically everyone who played Diddy).
Many people say "freefall after Up-special will break her concept as combo character". About this,I have an idea. Up-special should be changed to "if it hits, bayo can do next move.If it doesn't hit, bayo go on to freefall". This doesn't break her combo at all. But is this change possible in ssb4 game system? It's yes because Ike's side-special have this property.
I don't mind some
well thought out discussion of possible balance tweaks - it'll be interesting to see what they actually decide to do.
I think that this change would require that it only is the second up-b that puts you into free fall, as otherwise this would significantly hurt her recovery capabilities.
But, if they want to Little-Macify her a bit by making her shortfalls much more glaring while maintaining her current strengths, then yeah, maybe. "Should a character who can take you off the top or side from nearly any percent also have a great recovery and ability to throw out high-reward moves with little risk?"