I'll never buy an RTS or a multiplayer-only game, stop showing them to me. I'll never buy an early-access game or a game with 3rd-party DRM, stop showing them to me. I could cull 90% of the stuff in my discovery queues, automatically, with 30 seconds of box-checking.
I'm also surprised that the desktop client has never implemented an "is this machine actually capable of running this game?" check. Non-trivial to implement, sure, but really useful.