I think 2 vs 2 matches are great with "spawn rate = fast"

I know, they just need to change it.

Yes they do

I've played some 2 ver 2 games with fast spawn rate on large maps like Leviathan.
There is no need to change run speed to fast, game ends a lot faster.

IMHO i think they should implement a similar system to what Warcraft 3 uses, where you can "thumbs up" and "thumbs down" certain maps/playmodes.

You could still end up on something you have thumbed down on though, if there are few players online, it would just make it considerably more rare that you are thrown in one of those game.

Oh, and "AI allowed?" should also be a thumbs up or down option, specifically for demigod, as there are no AI option in other games.

I don't mind the 2v2 when they are on the smaller maps.  But when you are playing 2v2 on a map that was built for 5v5 it can really suck.  So yes it would be nice of them to limit the 2v2 matches to the smaller maps or do something to up run speed OR reduce spawn rate when you are playing 2v2 on a larger map in Pantheon.