The nerf to his juggling was understandable and I don't mind it too much, starting with four Pikmin and respawning with two is super helpful, the antenna color change is really helpful, yellows are awesome now, and I agree with the Pikmin health decrease for the sake of Pikmin Throw alone.
...and yet, he's still the worst-designed character in the game. Not to focus only on his recovery, but jesus christ you guys made it worse. Olimar can't even recover anymore. It's a free kill if you're competent and get him offstage. He's still useable, and the differences between Pikmin types is a cool idea, and I've already done a whole spiel about the leaf-flower-bud gimmick, but jesus christ I can't play this character anymore. His grab follow-ups are way harder to do now (while characters like Fox and Marth get follow-ups for free still), his grab STILL has problems with trading with hits, and his recovery is even worse than before. The hitboxes being removed on Pikmin Chain was fine, but Pikmin still kill themselves sometimes. If you're going to make a character that gets horrendously punished for being offstage at all (like Falco), it would make sense to give him at least really good onstage game. Yeah, side-b helps. Yeah, his grab range is really good (except for Purples now, thanks). Yeah, the buff to yellows was great. However, unlike every character in the game, you have to pay as close attention to yourself as you have to to your opponent. Organization and planning moves and attacks based on Pikmin is a cool idea, but the fact that the order of Pikmin is still random doesn't go well with that idea. I thought moveset mechanics and character quirks were supposed to complement each other, and things like Pikmin AI + Pikmin Chain, drastic differences between Pikmin moves + random order for generated Pikmin, and his poop-tier recovery-game + okay onstage game doesn't make any sense to me at all.
I've never been all that great with articulating problems with things so forgive me if I'm rambling, but Olimar didn't get fixed. Yeah he got buffed, but what basically happened with Olimar was like what BP did with the Gulf spills. Just because the leak was fixed doesn't mean that the oil suddenly went away.
Just because Olimar got some buffs doesn't mean his problems (grab bugs, recovery relying on number of Pikmin near you) were addressed.
The things that worked for him in 3.0 were made worse, some things bad about him (mostly yellow Pikmin and f-smash) were made better, and I don't think he's a better-designed character because of it.
tl;dr I don't understand or agree with the direction that this character is going, seriously considering dropping him until the bugs get fixed. I like fighting other people in fighting games, not the game itself.