I'd have to see what time period and focus they go with the game. AoEII HD scratches my Age itch pretty good.
I'd like to see a return to ancient civilisations given it's quite clear at this point that too many of the source assets for the original Age of Empires/The Rise of Rome have been lost to time for a remaster to be viable (similarly, Gearbox never did manage to track down Homeworld's Cataclysm expansion). Reimagining those games with a modern engine would be the next best thing.