Funny you should say that. A good portion of the 2 Guilds that I am in (on 2 different servers) have done just that. Also, remember you are comparing SWTOR to the MOST POPULAR MMO out there. They must be doing some thing right. Since people are leaving this game, you would have to come to the conclusion that BW is doing some thing wrong.
FYI, I play Assassin, that is tank spec with dps gear. It is serious roll face on pure DPS classes.