A slight tangent, but this was an answer to the problem I saw used once, and I thought it was a REALLY good idea:
This was the creator's first comic, and by the time they'd gotten 3-4 chapters in (several years of work), they had improved so drastically that they felt that the art, storytelling, and everything about the first couple of chapters was massively holding them back. They didn't want to reboot or redraw, but they knew that moving forward while still shackled to an opening they felt poorly introduced the characters and story they now wanted to share would be increasingly difficult, and staying interested in that story under those circumstances might be too hard.
So after thinking it over, they started looking at their planned comic and pondering whether it could be set up differently. They looked for and found a good place to finish the first bit of story, wrapping it up early in the first act, as though destroying the death star (so to speak) was the end of the thing. And then they took the rest of the story they'd wanted to tell and began to set that up as a New Comic instead of a continuation. They'd originally planned it all to be one story, but they basically took their first few chapters and turned them into The Hobbit, a small prelude to the "real story" that wouldn't be necessary before reading the new one. It took some reworking of the plot, but at that point, the chance to rework the plot into something more self-contained was a welcome one.
I thought it was brilliant. They didn't have to go back and rework old pages, but they also didn't have to stay shackled to an early, experimental work that they were no longer satisfied with for years and years.