i was hoping they do some battles on an island say Hawaii or Diego Garcia. This might give them an idea for a badass sea battle between Autobots and Decepticons. This also allow the Autobots to have some flyers or boaters instead of just cars...
A city looks much better. I'd like to see another city get devastated, but rather, in a way that's more devastating than the one in Chicago.
space isn't bad, but the least seen location is surely Cybertron itself! I vote Cybertron!!! Of course, a good space gunfight should be present
Somewhere like this would be cool: I can imagine the robots shooting at one another while clambering down the mountains, and it would make a nice change from the cities and deserts that the series has been giving so far.