No particular order within groupings:
Hype: Fox, Wolf, Roy, Sheik, ROB, Falcon, Lucario, Samus
(Not so) secret hype and/or kept down by THE FOX MAN: Tink, Diddy, Mewtwo, Ike, Yoshi, Marth, Lucas, others
Antimeta hero: D3
Maybe good, maybe not, currently unpopular because feels: Pit, MK, ZSS, Pika, Link, maybe others
I recover with an up-b tether, RIP: Ivy
Might be scary Soon™: ICs, Olimar
By kept down by the Fox/Man, you mean there's just some OP top-tier/common character/s that poop on them too much for them to break EVERYTHING, but they're still basically broken? Or what does that mean?
Or B) they're just as OP as the Hype but 'less' normally hyped because who the heck plays Mewtwo/Lucas/Diddy after the cheese was removed and people had to start learning the real characters? And who plays Yoshi at all, and Ike/Tink are brain-dead so nobody really bothers with talking about them, and Marth is just as obvs good ol' Marth?
I'll assume the latter.
Link is sad now? He really get hit that harder? From what? Tethers, Rang, and people learning to not jump into death?
When has Pika ever been anything OTHER than 'currently unpopular'?
Ivy and Oli still good but recovery is just a joke, right? Still good?
ZSS feels good, but I could see the feels thing. It's definitely not nearly as interesting of a character. Reverting the grab alone would re-apply the niche and counter-play heavy match-ups from both sides that she used to bring to the game. So normalized it hurts. I assume that's the 'not hype' stuff that gets people.
LOL @ Ooze anti-meta, makes sense. ICs fit that too, but wrong meta and stupider meta.
What about Puff?
What's the deal with the Puff? Anyone liking the thing, or she getting hated on still because 'wrong game' stuff?
Why do you see Zard as bad, out of curiosity?
Playing him against characters where it turns into a stupid game.
DK, for example, just turns into a game of locking down his DD-Grab and playing a specific way. D3, gotta go to him and get specific hits to make something of it, and hard to kill or do any Zardish stuff outside of combos on either of these 2.
Basically still feels linear and functional, but most of the things that 3.5 seems to have don't really help him when they help others in some ways. That pace-controlling stuff was never his problem from being 'great' the way it locked out Ike/ROB/Lucario/etc, the nerf to recoveries isn't something that he benefited from almost at all, things like that. Anyone who had a good recovery or good pace control had OTHER things that Zard needed to deal with, and those haven't changed. Speed that out-matches him, getting clipped into combos.
Neutral games that involved pace-control were never much of a problem since he was solid at covering himself while staying threatening. Meanwhile the neutral games that involved forcing him to take action or lose the neutral due to things that threatened him if he didn't... those are still around.
So the neutral game and punish game were hardly altered in ways that help him. Strong characters still strong, decent characters stronger, Zard was niche to start, and that niche just got a little harder. That was roughly at a first glance, but seems to hold more true the more I look at it.