Complexity for the sake of complexity is the theme of the expansion. I didn't really care for changes to most of the DPS jobs.

DRG: Random positionals and annoying timer upkeep.

MNK: Carpal tunnel abilities.

BLM: Annoying timer upkeep *just* to cast your highest tier elemental spells which you didn't have to do in 2.x.

MCH: RNG, RNG, RNG...

BRD: Gave it the same cast time ability as MCH, killing part of its identity as a mobile DPS.

I think NIN got a nice change overall but it still has the mudra lag, so that's no good. SMN genuinely got an honestly good buff, giving it something to do in the back half of every minute when aetherflow stacks would have been previously spent. The rest of the jobs outside of NIN and SMN just don't feel as good as they did in 2.x.