So we got rid of the Cross-Class System (which I'm all on-board for doing) and replaced it with the new Role System which is basically a Post-Mists of Pandaria WoW-Style Talent Tree or very close to it.
That's great, I liked that system.
However... just like Blizzard, we sadly made the same mistake: Too many of the "choices" are no-brainers and are not choices at all and they eat up our Role slots for things that SHOULD be baked into the class baseline.
Healers:
This is the most egregious so I'll start with it. Unless you are in an 8-man group, these are must-haves:
1). Protect (why is this not part of the class, baseline? What healer goes in without casting Protect on the group?)
2). Esuna (I am seeing a disturbing number of healers who go in without it and they make battles MUCH harder, especially on bosses such as the last one in Castrum Abania that puts powerful DoTs or other crippling status effects that can be removed).
3). Largesse (This is a no-brainer. I mean, seriously.)
4). Swiftcast (Again, no-brainer).
This leaves me with one choice left, and if you are a WHM, that choice is going to be Lucid Dreaming, hands-down. So that's 5/5 if you're a WHM, and 4/5 if you are SCH, and I dunno about AST. You could maybe swap out Protect if you are in an 8-man pre-made raid group, but in all honesty you're going to be assuming that you're going to need Protect. You could perhaps cast Protect and then swap the action out and put something else in, but... that only goes to show that you might as well just make Protect Baseline for all Healers.
Tanks:
1). Rampart. You'd have be an idiot to NOT choose Rampart.
2). Convalescence. No Brainer.
3). Provoke. No Brainer.
4). Low Blow. If you're not a PLD, and maybe even if you are a PLD, because PLD stun is on GCD.
So, again, 3 No-Brainers and 1 more depending on Job.
The abilities I mention above are things that are so basic and important to the job, they are simply "Must-Have", in that you really can't do your job effectively without them. Such shouldn't be "choices", but rather be baked in to the class/job from the start and they should be replaced with other situational stuff that revolves around playstyle and/or job choice, whether you want to specialize further or fill your job's weaknesses.