You say that like Tekken doesn't still have tons of useless moves and throws that are entirely redundant or do absolutely nothing or are outright detrimental to you.NRS is unique in that they their design strategy seems to be to make a bunch of special moves that they then decide if they want to actually use later. That's how we got justice 2 where 40% of the special moves were unusable in competitive. I can't imagine that other developers have ever made dozens of fully animated specials and game tested specials that were banned from use in tournaments.
Variations add a lot of variety but it clearly has an effect on balance, you can't buff move X because one kustom move makes that cheap, can't buff character's counter zoning cause they could equip the projectile reflect instead(aka switch characters), this cool setup move is bad because we can't give this varied tool set a cheap setup move, etc. And how many cool moves are just not competitive in terms of kustom slots? Like who the hell is ever gonna play Spellmaster in kustoms?(Screaming Souls is great though)
When they do it right, you get characters with cool ass variety like Shang or Tremor buy often it feels like a more complete toolset is being butchered for the sake of variations. The strings locked behind kustoms come to mind.
You say that like street fighter didn't just give Dan a super taunt that grants his opponent a full super meter and a guaranteed ko on punish.
You say that like smash isn't super competitive even though about half the moves in the game are literal jokes
You say that like mortal kombat itself isn't founded on complex fatality moves that have dick all to do with competitive viability. Remember, there was a time when literally EVERY MK CHARACTER had the same normals, and SEVEN of them had the exact same sprites.
We could go through any character in any fighting game and find at least one button or special that is completely useless. Should we just disable it? Should we turn every fighting game into dive kick or footsies or something even more rudimentary like paper rock scissors?
Or should we allow developers to put whatever the fuck they want in the game and we the players can stick to fucking playing it?