It would be cool if you could enter any old resolution like you can in Glest. I really loved that game filling up my larger-than-normal (though not massive) screen.
Well, duh. It should also be one of those settings only the host decides. EDIT: Or what if players get to vote on the settings of the game, and if it's a tie, then the host chooses or it's randomized?
That's another agreeable statement. They'd have infinite use for custom scenarios. However, I don't think they should be createable in random map gameplay.