Unfortunately the incremental approach doesn't help when it comes to the review step by another user, they've still gotta take it as a lump and apply fresh eyes on it.

not if you break your work into a stack of PRs, which is the standard practice for my team at work. you just keep adding PRs to the top of the stack while the reviewer proceeds from the bottom. if something changes you propagate the change up the stack, which LLMs are also pretty good at doing.