Quote Originally Posted by Dualgunner View Post
Can we really consider a MOBA to be that comparable to an MMORPG?
Oh, it can be. And the most striking difference is: LoL and other MOBAs do not rely on roles. It doesn't need support champions, or tanks, or ADCs, or Assassins or any other archetype. The game works even if you'd remove those, strategies simply adjust accordingly.
Tanks and healers in an MMO however rely on being forced into the game via un-avoidable damage, so not having those makes content unplayable.

That's why it's a somewhat bigger topic in MMOs than in MOBAs. And personally, I do expect healer and tank population to drop - not necessarily because of new DPS, but because the only really hot looking tank seems to be PLD, while the only really great looking healer seems to be AST. The rest just seems "meh".