A small complaint I’ve had with the Game World map vote screen is that sometimes, mainly on smaller servers, the screen stays up for just a bit longer than it needs to since everyone’s already made their vote but the timer still needs to run down (this is especially noticeable in singleplayer since you’re the only one playing).
A small change that I think would fix this, though, is a lock-in button for when you’ve decided the map you want to play on. It’d show a little check by your icon, and when everyone’s locked in, the vote ends regardless of how much time is left on the timer.