I’ve been wondering the same thing. It seems like texturing with HDRIs of some kind would give LOTS more options and freedom with color grading effects and whatnot. Skydomes, sure that’s pretty much a given, these days, but the next step is floating point textures.
That being said, I’d be really surprised if procedural materials don’t have that kind of precision… but it doesn’t help with your case.
I’d like to know the answer to this question, too.