If I may also add something - Pac-Man Championship Edition and Championship Edition DX are modern, up-to-date, expand on the Pac-Man formula and were near-universally regarded as very good games by gamers and game reviewers alike.
"Hasn't been relevant since Pac-Man 2" isn't just a dumb thing to say, it's factually
incorrect.
However, whilst I'm here, I would like to put forward my own Pac-Man moveset/playstyle. Straight off the bat, I'd say that I actually want Pac-Man to look like his new appearance:
Sure, some say it looks creepy in images, but in motion this Pac-Man is arguably one of the better-looking designs for him (shame it hasn't been in a decent game yet), and I'd say is actually the most fitting design Pac could have to fit in with the rest of the Smash 4 ast. That being said, I'd like him to have jittery animations which look like they have a few frames missing, like Wario or Mr. Game and Watch (although not as pronounced as GW).
Onto playstyle however, my vision of Pac-Man is that he should play as close to his original games as possible, not unlike how they took utmost care to preserve Sonic, Snake and Megaman's personalities through their movesets. However, this is naturally harder to do for a character like Pac-Man who typically appears in top-down games where he has little attack capability apart from his mouth. So how could Pac-Man's iconic playstyle be implemented into Smash? My idea is for him to be a character with a strong sense of
4-directional movement and low-knockback, multi-hit attacks.
Firstly, I'd like to suggest that people's suggestion for Pac-Man's
Up Special - Pellet Chomp is pretty much a shoe-in for his recovery, and frankly, there's little else I could think of that would be more fitting for Pac-Man's up Special. For this move, the player gets a few seconds to control Pac-Man in any of the four directions of the original game. The pellets that'd appear in front of Pac-Man would merely be a visual effect, as you'd actually control Pac-Man rather than the chain itself, and he would control almost exactly as he did in the original arcade classic, except he also does multi-hit damage to those he touches.
Secondly, he'd have a move that'd serve as a horizontal recovery of sorts - his
Side Special - Quick Chomp, which, like Ike's Side Special, can be charged varying amounts to get him further across the stage. Effectively, he dashes straight horizontally, doing more chomps (which do more damage and knockback with the initial bites, and less so the further he travels). However, it is far slower-moving than Ike's Quick Draw, and takes far less time to charge. Neither Pellet Chomp nor Quick Chomp leave Pac-Man in a vulnerable state, meaning Pac-Man can continue attacking after either move. Not only that, he can perform each of the moves once whilst mid-air, meaning he can chain together either a Pellet Chomp then a Quick Chomp, or vice versa.
Pac-Man's
Dash Attack should be a singular weak bite, done whilst running. Doesn't sound particularly interesting by itself, but Pac-Man's Dash Attack would be unique, in that it would be the only Dash Attack that barely slows the user down and has little-to-no lag frames at the end of the move. This means that effectively, if he goes unstopped, Pac-Man could run from one end of the stage to the other, doing consecutive Dash Attacks -
something no other character in Smash can do.
Whilst we're on the topic of unique character traits, most characters fast-falls increase their falling speed by around 40% in Brawl, aside from Link and Squirtle who's fast-falls make them fall about 65% faster. Pac-Man would have the biggest fast-fall difference in the game, making him fall a whopping 80% faster. Also, when fast-falling, Pac-Man's horizontal movement ("air speed") is gimped, meaning that his fast-fall effectively brings him into a
sharp vertical descent.
Pac-Man would have two other methods of sharp vertical descent - his
Down Special - Butt Bounce, which I guess would perform as most expect it would, and his
Down Aerial, which would simply be Pac biting downwards in mid-air, but it would be a stall-then-fall move, similar to Sheik, Toon Link or GW's Down Aerial, which propels Pac-Man downwards (even moreso if done on the C-Stick). I don't know what kind of throws Pac-Man should have, but again, I think it should be heavily influenced by his arcade origins, with each throw being very stiff in animation and the character in question being thrown almost straight in any of the three directions (rather than slight diagonals). The rest of his physical moves would probably just be variations on punches, kicks and bites - not particularly 'creative', but Pac-Man not attacking with his mouth would be like Olimar not attacking with his Pikmin, or the FE characters not attacking with their swords. For the sake of variety they could give him a Bomb move for his Standard B (from Pac-Man Championship Edition), because I think it's important that most of Pac's moves come from what would be considered
'traditional-style' Pac-Man games.
And that's all I really have, for now at least. It's not a full moveset by any means, but it gives a good idea of where I think Pac-Man should go in terms of a playable character. Lots of multi-hit attacks, and lots of single-direction moves. Nearly every attack in Smash Bros. is at a slight diagonal in terms of Knockback, but every single move in Pac-Man's line-up would be directly in one of four directions. Plus, of course, he'd be one of the best in the game in terms of aerial capability due to him lacking a vulnerable state, being able to chain his two chomp specials together, being able to drop down to land fast, an having some compelling aerial attacks. To sum it up simply, Pac-Man would be one of the best in the game in terms of both Horizontal and Vertical movement (he was always running away in his games after all), all whilst never having to compromise his ability to get as many multi-hit biting moves in as possible.