Comming from CoH I do miss class roles. It was fun having Tanks, Scrappers, Blasters, Defenders and Controllers, each having several primary AND secondary power sets to choose from. SS/Invul tanks played WAY different than Fire/Fire, likewise a Illusion/Kinetic controller was totally different than say an Earth/Storm.
Then Villains dropped, and we got Brutes, Stalkers, Corrupters, Dominators and Masterminds.
I never felt forced into a specific group makeup. Even if you always HAD a tank, healer and controller, just the different power sets/combos these classes could have made things interesting.
Sure running a full team of masterminds with 6-9 pets each could get a little crowded, but it was fun. Also the character creation in CoH and even Champions Online was great, I do care about how my character looks, and hate having such limited options in character creation (I know there are worse out there)
PvP was fun, albeit a little paper/rock/scissors for 1v1 (I can destroy most brutes, but most dominators wipe the floor with me)
I left CoH when AE came out (you could build your own missions, farm the shxt out of them and get to max level in a single day) and it was impossible to find a team for anything other than (52 boss farm AE LFG)
Then I jumped to CO, seemed the logical step, even lifetime sub'd and pre-ordered. Their classless power system was not to my liking. You could just about pick any power from any skill set for any character. Everyone became a jack of all trades and if you think SWTOR is easy, you should have played CO, if you couldnt solo a 4 man mission, your keyboard probably just came unplugged. Didnt play too long after it went live so I dont know how thats evolved.
So far, to me, SWTOR seems to be right in the middle, almost every class can perform almost any role, but the benefet of teaming up is still present (unless you're a sorc/sage apperently heh)
As with most things, there are pros and cons and then theres what is ideal, for each person individually. Ive been sick of Trolls and Elves for years, and the spandex was chaffing, so lightsabers/blasters it is!
I can see myself playing this game in its CURRENT state for a year or two, but I take my time and love alts. With enough new and good (most have seen new content do more harm than good at one point or another) content I could hang around for a decade or so