Stuff like Street Fighter, Marvel VS Capcom, Soul Calibur, DOA, etc. These complaints weren't neccesarily apply to every series I just listed, but they're pretty common problems with the genre...in my opinion.
- All the different versions of games of released. I mean, Street Fighter II had 6 different versions...come on. they couldn't patch games back then, but yes, releasing 5 blazblue titles these days is inexcusable - The stupid tweaks, usually involving character balance, because they couldn't get things right the first time (like they do in every other genre). its tough balancing these kind of games - The fact you can't really change much in a sequel, just add characters again hard to patch games when there's little internet and companies got used to it - The lack of value as a one-player experience a byproduct of multiplayer games being online, same thing with FPSs, nowadays you have a short campaign with most of the game being online multiplayer - These games often aren't that accessible to new players, and there's not much to enjoy until you're at least an intermediate player true but I think this allows for greater a greater competitive ceiling, kinda like CSGO
I do enjoy fighting games, don't get me wrong. I even went so far as to buy some (although not many). But these are serious problems with the genre, and there are quite a few of them.