Oh, the tales I could tell - but I'm at work and only have time for one:
Sometime back around the launch of CoV, I somehow ended up on an all-defender team in Bloody Bay. The leader had Team Teleport, allowing all eight of us to move and fire as a unit. It was... impressive, and the closest I've ever been to the Offenders experience.
EDIT: Regarding an accuracy falloff around 20 - a lot of it is perceptual, of course, but I seem to recall hearing of an actual coded "beginner's luck" buff (meant to compensate for the nigh-uselessness of TOs, and not wanting to drive off new players) that was supposed to end about that time. Can Arcana or someone else who's delved into the code and/or the numbers confirm or deny this?