I think its profile needs to be tweaked. Its far too bursty and can concentrate way too much damage into buffs, which exacerbates the problem in content like Ultimate where damage profiling is critical due to downtime and intermissions.
Take some out of its motifs/muse system and give it to other parts of the rotation. PCT would still be a very strong DPS and it would satisfy SEs balance philisophy, but its profile would be a little more challengable.
Separately, BLM needs a straight up buff.