I thought about this a lot, since I have been grinding pictomancer a lot.

For all jobs, when you are in an advantageous situation, it stands to reason that you get to access more of your offense. That said, pictomancer's design is imbalanced because it exacerbates it the most. If you are ahead, you get more time in double the DPS with subtractive palette and all the time you need to paint, and it's really punishing.

But if you are on the backfoot, you really feel it. You have nice tools with 25y range attack, barriers, heals, and escapes, but the inability to paint is poignant, and makes things feel even worse. I guess if I could ask for something, it would be Tempera Coat/Grassa breaking would give you a buff that makes your next painting instant. It would help a team dealing with pressure more than a team already winning, and still requires a GCD to capitalize on.