Well, if the finished game takes its visual cues from TF2 the way the teaser video does, it might fix something that always bugged me about TA: a fantastic, polished, challenging game that lacked any sort of personality.
Ah, so my emotionless robot race defeated this other emotionless robot race. Fantastic.
This video actually reminds me a bit of a short story by Del Rey, where a race of robots exploded across the galaxy, propelled by fury, anger, and a very real hatred toward humanity. Their goal was to completely extinguish every trace of humans off the face of the universe. They colonized worlds, launched warships, multiplied by the trillions. Along the way, they subjugated alien races, but instead of reducing them to slaves or whatever, they ended up dramatically improving the lives of everyone they came in contact with, sharing technology and providing a common space for culture and peace to spread. This was fine, but it was of secondary concern to the robots, who merely wanted to eradicate their hated enemy.
In the end it turned out the humans both created the robots to seek and kill other humans, and then the dopes actually extinguished themselves. They were never a threat, and the robots were only carrying out their mechanical and emotional programming. The king robot is presented with evidence of this, and he just destroys it because it would undermine all the awesome good that their war-that-never-started was still bringing to the galaxy.
I love old robot and rocket stories from the 60s and 70s.