To be honest, I think Little Mac can be a good character, while still retaining his bad aerial game and disadvantage. The dev team just needs to grow a spine and actually make his ground game overwhelming and not be afraid of community backlash.
Make all of his Smash attacks and specials stronger, in terms of knockback. This should prevent heavier characters from beating him in a war of attrition and make his Up-B a proper anti-air.
Revert his KO Punch's forward range and endlag to Smash 4 levels and make it so that he can't be knocked out of it. Opponents shouldn't be able to neuter it, by projectile or aerial camping. This should prevent shield and ledge camping, while making landings a little riskier for the opponent, not to mention the pressure and mind games it would bring in neutral. This might make him overly rely on it, but that too could be considered balancing, since he would have to conserve this precious resource and couldn't throw it out willy nilly. This should set up a proper 50-50 and make it so that a successful hit would give him a considerable lead and a whiff, gives his opponent a considerable lead, given he needs to take a fair amount of damage to even obtain it and Mac's already at kill percent, before his gauge is even half filled.
Combining his lightweight with that atrocious of a disadvantage, leads to some of the most ridiculous gimps I've ever seen and from things no other character really has to worry about. I think the above buffs are pretty fair, given that reality. I fear though, he has long since been relegated to unbuffable status, due to fear of backlash, so will likely stay with Bayonetta in perpetual obscurity.
It’s the early meta game, Zelda has always done reasonably well in the early meta of all games she’s been in. Only to end up being one of the worst characters later. I expect no less this time around. Early meta Zelda is a meme at this point...
Define "reasonably well." Did she place high in super majors and dominate locals for several months after release? There was early hype, but it quickly dissipated, but Ven and Mystearica seem to be doing well regardless.
I've seen lots of naysaying from you and other posters, but have also seen some characters that lack results like Shulk, being hyped for future potential. There aren't very many characters I can recall, placing high in super majors or doing well in stacked locals like Vegas. And yet these characters are consistently rated higher than Zelda, despite lack of results.
It's one thing to be skeptical of future potential, especially when current results contradict that. It's an entirely different thing to believe in the future potential of a character being bad, especially when current results contradict that. Unlike other characters, Zelda did get a complete revamp on one of her specials and got the rest of her moveset buffed. People are putting Ganon in high tier, just because he got a sword and his Nair is got buffed. And the only person that has really used him at a high level is Nairo and his results have been inconsistent at best. Zelda has better results than Ganon, so why is Ganon ranked significantly higher?
I'd like to see an actual reason for this, not it happened in other games, with completely different engines and movesets, so it definitely will happen this time. Characters have risen and fallen in between Smash iterations, because engine changes have benefited or hurt them. Not to mention there haven't been many characters that have gotten aspects about them entirely redesigned.
Until that happens, I can only conclude this to be another reason for why tier lists are crafted on perception, not any sort of objective basis, like they're made out to be.