I'll always be a SMN as my main DPS, but I can completely understand those who say it's frustrating and unforgiving to play. I'm glad the Aethertrail Attunement timer is gone (seriously, eff that gimmick, not every class needs to be a MNK), and I'm glad Ifrit-Egi has some competitive use again, but I feel like the devs took a ton of power out of our DoTs, pet (no more Spur) and Ruin III to put it back into this heavily cooldown-reliant Demi Bahamut mechanic, and I find that a little obnoxious considering the devs specifically said they wanted classes to be a little less punishing to play at the optimal level.

At this point, in their current states (and with BLM's planned changes for 4.05), I'd pick BLM or RDM (probs RDM, it has tons of strengths and no real weaknesses right now).