As a diehard vanguard tank I want to see the AC excel and not relapse into 1.7 era where it was assault or don't come. Of course I newest and the dps consterns currently and find them justified. A vanguard Rep might have a similar focus or be dps focused at the expense of the tank VG community. Finding one plaer who can represent both equally will be very hard.
Indeed, the idea, as is being implemented is way way way too broad a brush to go anywhere near being useful.
I could tell you anything and everything about being a PT tank in PVE endgame, and if I were to make a guide, would probably 10+ pages long, but I wouldn't know the first thing about PVP or DPS on a PT, as I've never done either.
Ive been playing this game since early access.