As someone who is kinda fresh to his drk and has also been working on a drg honestly iconic tank classes are desperately needed far more than iconic dps classes.

I can hop in duty finder and instantly find a group as a tank and run through it no problem. Hopping on dps however nearly quadruples the time i have to wait. As cool as a DPS Sam would be it would probably cause nothing but issues seeing as a ton of people would jump over to DPS and then the Que would be even more heavily skewed. I can honestly see DPS ques being double or even triple the amount of time they are now if Sam is released as a dps simply because its such an iconic class.

Having it as a tank would honestly drastically help out Duty finder and would thin the DPS herd a bit for awhile.