What would be nice is a communal tagging system with weights attached. IE: anyone can tag any game with anything they want, and the more people tag a game a certain way the higher that tag ends up in priority. Reduce the amount of tags anyone (including dev) can apply to the game (5 seems fair).
I've seen in other threads where folks complain about the "gay" tag being applied to games even though they only really have like one gay scene that's avoidable, it'd be nice to know how prevalent the content is to the game.
I've mentioned it elsewhere, but a "simple" (I don't know how difficult it would be to implement that on this forum system) fix would be color-coding tags based on prevalence.
As an example, let's say a game will get the "futa" tag. Due to the rules, that can mean anything from it being the main feature, or some avoidable 2 seconds screen.
The system that I'm suggesting would require tags to also include their prevalence, graded from 1 to 5, 1 being "happens once" and 5 being "you'll be exposed to this throughout most of the game".
Then on the game's page tags would be sorted by prevalence, so people looking for a specific kink would know if the game is worth their time, while also allowing people who really dislike specific tags to continue avoiding games where they're present at all.