Flickering and flashing scenes would be cool. Like when something epic happens..you should do what steamer said about the bass and shot adding up and feeling all that more epic.

Since it's a WCS promotional video, a cool idea would be to hightlight the ultimates more. Such as, when the athena freezes, if you could somehow highlight the beem it makes and show just how cool each race can be. That would be likely to be more promotional than epic shots, which can happen in PUB or anywhere else.