Hmmm, having a hard time getting excited about this. Monty Ohm's a force of nature when it comes to animation, sure, but at the end of the day most of his stuff just comes across as smashing stylized action figures together and while this time he actually created the action figures, otherwise it doesn't look like it will be much different. The concert thing was vaguely interesting but I still don't see any reason to care. Too much to expect from a trailer, I suppose. Moreover, this sort of art style (and it's fondness for young schoolgirls in skirts doing cartwheels with exotic weapons) just isn't my favorite. I don't watch much anime and I already feel like I've seen this all before.
Also, having watched the Red vs Blue stuff, I'm starting get deja vu from the movements, especially that of the Knight (hulking armored figure and all that).