He tried that with Kickassia... which turned out to be one of the worst, most unprofessional films I've had the displeasure of seeing.
It's at 42:53, just in case it doesn't take you there automatically. He's saying the schlubs that were working for Channel Awesome were just as strong personalities as all these iconic Batman villains who have been around for decades, some for over 70 years. Doug believes if you put strong characters together "it writes itself". Uh, huh. I'm sure Doug would do just as well in a professional writers room as he did doing live improv.