01-04-2013, 06:05 PM
Yes, tanks and healers are in shorter supply. But I would strongly suggest that you build for at least 2 of the 3 roles by the time you reach end game. Having the flexibility to play all 3 roles makes grouping so much easier. Very often in my cabal, we put together a group and then figure out who will do what roles.
Gearing up for multiple roles at the same time takes a while, but it's not that bad. It doesn't take very long to assemble a set of gear for each role from drops. I've been doing nightmares as both dps and tank, and have a full set of healing gear just from drops. It's only when you are spending bullion (bullion are earned by killing bosses in nightmare dungeons and from the NY raid) that you'll really feel like it's taking a long time. But it's worth it, if for no other reason than to keep the game fresh when you are running the same content every day.