I disagree. Let's say one character has one move that makes them good. It's just an amazing move, and they rate pretty highly on the tier list. But, every other move they have is worthless. This character is pretty easy to play because of this, but those who play for fun avoid him, and some who play competitively use him, but only because they can handle his simplicity better.
Ah...but here's where you made the mistake. The character
wouldn't be good! If they only have one single good move, then their game would either be
1. Broken because the move is too good and they'd get banned, because banning a move is ridiculous (though if it's a tactic the tactic might get banned, if so move to number 2.)
2. Terrible because they're so predictable (if the move has at least on counter, this will be the case)
Boring character? Yup. Let's say there was a sequel.
Bad character is more like it.
Let's say he had two viable moves, but the first was made less good...now he's far more interesting! This increasing his metagame, and increasing competition with this character.
Is this second move a good thing? Of course! It increases depth, competition, and fun, the three ideals of the foundation of Brawl+.
He's only more interesting now because he has an actual mixup game now. As in, now it
exists. However, what if a character has one bad move and 19 good moves? (Marth). That one bad move will simply not be used (Marth's b-throw) and many of his
good moves will not be used (because there are better options). Making that one move more useful will not make the character more interesting, because he's not using all of his moves in the first place (how many Marths use jab?).
Let's say that situation didn't apply to only one character, but the entire cast? Few people would play such a game, as it would be far too simple.
Because there wouldn't be enough options to have many Yomi layers.
How does this apply to Smash? Many characters have worthless moves.
Obviously not enough to make the game boring.
I say, since we're going as far as changing the code in the game, from characters to stages to menus, why not go the full nine yards? With each move we buff, it makes the game more fun, deep, and competitive as long as balance is maintained.
Character balance is not as simple as you think.
One or two moves can determine an entire matchup against another character. For instance, what do you think Marth vs Fox would be like in melee if Marth's upthrow couldn't combo into anything?
We made a buff that requires either another move to be nerfed or the buff to be removed? Let's nerf something else!
Buff Marth's b-throw, nerf what?
Is the game I described earlier unreasonable? Look at vBrawl. Plenty of matchups rely, basically, around one move for one character, making the game incredibly lame (DDD vs. DK, Sheik vs. Fox, Marth vs. Ness).
That's exactly my point. One move can change a matchup, so why unnecessarily buff things? Why buff a character that's already balanced? Even if we nerf something else, we're not just affecting
that character when we make character changes. We are affecting that character and
all matchups against that character. You buff Marth's b-throw and now he's got a reliable combo option out of a grab against DDD, which he didn't have previously. Even if you nerf something else, you've still affected that matchup and still messed with a relatively balanced character, for the sake of adding
one move to his arsenal (especially a character who already doesn't use all his moves anyway?)
Granted, Brawl+ has brought it to a level of very much increased fun, depth and competition in comparison to vBrawl, but why not keep going? We are no longer limited by 256 lines, and soon, we won't be limited by 430 either. How about we be proactive and go the extra mile to make it the better game?
Because "going the extra mile" has a lot of potential side effects and is completely unnecessary.
Look at Bowser. I believe that he was "fine" the way he was in the 3.0 codeset, but then his tilts were sped up, half his up B landing lag was removed, and now suggestions have been taken for more buffs. Why? Because it follows this project's ideals. If you look at Bowser's list of buffs, it's bigger than any other characters. Does this make him broken? Nope. Does this make him too good? I don't know, but if it does, it can be fixed if that is realized as true. It's better to have many good aspects than just one.
We buffed Bowser because he was
bad. He had many situations that he simply
could not deal with. If Marth was just standing at sword's length camping fairs, Bowser simply had zero options for getting out of that situation. We buff
bad characters in an effort to balance the
game.
However, as far as I know, Jigglypuff is
not a bad character. I am 100% sure that Marth is a
great character, easily within the top 10 characters in this game. Why should we buff them? Buffing Marth's b-throw could push him over the edge if done wrong (b-throw to side B combo?), and even if you nerf him, you might not nerf the right moves. Nerf his fair and he loses his BnB spacing options, nerf his side B and he gets ***** by spot dodges (the vast majority of Marth's moves only have hitboxes for 1 frame), nerf counter and...nothing really happens because he just won't use the move (99% of the time Marth uses counter, he could've done something better and just didn't think of it). And even if you find a good move to nerf, it still will drastically affect his matchups, since the moves he uses most actually depends on the matchup (it's not just fairs guys, some matchups won't let you do that).
Why go through all that with an already balanced character?
Especially when we're trying to set some sort of standard relatively quickly so that we can actually
have tournaments and so that people can practice!