I would like a game where the development company is only responsible for making the game.
No long, enforced intermissions between rounds.
Escape key works for all interstitial screens.
People can run their own servers.
Free to mod.
Basically, nearly every new game enforces how the player plays beyond just mechanizing the play. For instance, in Overwatch at the end of the game there are highlights. If you leave the highlights and queue again, you aren't actually in the queue until the highlights play out in your previous game.
Sure, each of the games breaking these rules may claim success, but this thread is about what I wish existed. It seems like a lot of games with these features used to exist (running my own server, mods/maps, etc...) and we've lost something.