Are you up to date on frontier capabilities?

ChatGPT's image pipeline used to completely suck at sequential edits - i.e. "compounding piss filter" and more. The new Images 2.0 one is a generational leap over that. Have you tried it? Do you still have issues?

Not sure what top export resolution is in the system now, but they did bump it up some.

What remains is no true native CMYK? But that is a somewhat niche capability. Not sure if you can partially compensate in "pre" by prompting for print-ready images to keep gamuts constrained and get reasonable outcomes from a naive RGB->CMYK conversion.