most fun? rogues
most useless besides fun? rogues

I have 5 rogues (not at 80) and it's lots of fun to chain sap, pop up out of nowhere and annihilate someone and disappear again

but for myself I get bored doing that after a few hours.

However for a rated AV I can see potential if you get them to work. It's a very mobile team that can sneak past enemy lines, and go cap bunkers. Defending your general and disarming the tank x5 ain't too bad either (once at a time obviously). It can be a suicide squad that can do things that other teams can't do.

However you can stealth with druids, they'r build for totally different playstyle i'd say.