This is basically what I tend to tell people tempted to go back and redo old things.
It is so easy to get stuck in a cycle of redoing things. Oh hey, my style developed, I don't like how that page looks now, I'll just redo it. Oh, my style developed while I was doing that, I need to redo that whole chapter. The thing is, your style is always going to evolve and develop if you're continuing to draw and create.
I advise looking back, finding the things about your work that you appreciate, and letting it go. You can't go forward if you're constantly retreading your path.
When I did a collection of my comic Incubus Tales, which ended up having over 700 pages and running over 7 years, I only ever altered one single panel that I'd never been happy with...and it took me a really long time to even get the panel looking right. The rest I could appreciate, take something from, and move on. It's such an easy trap to fall into, the "improvement means going back and redoing" one.
It is almost always a better idea to just keep doing new and developing, not going back and redoing what you already did that was fine. The only exception to this would be if you were doing some test runs of ideas and you went back and redid the whole concept in ways that you couldn't just change the dialogue for or something; I did that with my comic OCCULTIS, but that was just a couple of pages each time before I figured out that I needed to rework the premise and, after a couple of experiments, ended up finding the approach that worked.
Everything you do, whether you use it or not, has value and should be kept. You can still get something from it. You can still be inspired by it and work with it.
Don't get caught in the trap.