I've decided the FATE system sucks. Well, let me be more precise - FATEs that involve fighting a large mob of enemies at once suck, particularly when tanking. I just don't find them fun in the least.
There a huge mass of people, AoE spells and graphic effects going off everywhere, my sound frequently clipping out because of all the effects going off, and I can't even tell what I've got targeted, can barely tell when my current target is dead, and when I need to retarget it's nearly impossible to do (yes, even TAB-ing through is nearly impossible).
Granted, even when I feel I've spent the entire FATE just spamming hoping to luckily be targeted properly I get decent experience from them, but it feels so lifeless and worthless and you never have time to read any of the flavor text that describes the FATE anyway, so it's just a button mash grind to get experience.
Single enemy, "boss style" FATEs are much better since I needn't worry about losing the target and can concentrate on how I'm using my skills, but they're still pretty dumb button mashes.
Maybe the later level FATEs are better in this regard, but FATEs almost make you wish they had a million servers and some were nearly barren so that FATEs weren't so overrun with people all the time.