I love both music, but when the same music is repeated again and again, it grows boring. I would like to see a rotation between all the soundtrack they have made in the past. Something done by the game itself or a jukebox menu somewhere. I like diversity.
I know some games that their music change depending on the current state of the game. As an example, Age of Mythology has a "standard" background music. When you were attacked, it would trigger another song, or when you engage a fight, another song would play. I know music can be a bad distraction in Hawken, but implemented when there isn't any fights, it could fill up these silent moments when looking for enemies, collecting EU or just waiting at any AA. Actually, I can only remember myself a special song is triggered when a Battleship is launched. I guess not many people are supporting this idea, but I can dream, right_
u53r is right, the music mentioned in the OP can replace the current ending game music, or sometimes take its place...