The real issue is that we just have way too many motifs, and a good option could be to cut them down back to no charges each, but that would remove a big part of the job's flexibility. On the other hand, a lot of other jobs don't have that luxury and have had to content with not drifting important GCDs. Still, redistribute the potency all across the board without making the motifs an actual damage loss, and remove 1 charge from the creature one would be a good start in my opinion.

And frankly I know it's gonna make people laugh but you don't even need ultimates to already see what the math and experience shows, and what you can already see in dungeons when it comes to downtime. Ultimates have rarely been very well balanced. For instance, DSR was an absolute joke of balance back then between jobs, and they didn't bother adjusting for it.