I'm an end-user, not dev. My main complaint for itch is the search system.
I think more tags should be implemented (i.e. retro-inspired games vs games that can run on retro systems).
itch desperately needs a tag exclusion option other than an old workaround. Example: I like games featuring gay characters and a variety of subjects, but I do not want visual novels! There's no easy way to filter them out, and the gay and LGBT+ tags seem inundated with that type of game.