wow. i will never recommend redrawing any episode. a couple of pages, yes but a whole episode, for what? it's okay you didn't plan well before executing. matter of fact, its good you started and went all this way then realized it can be better that means you are learning and growing as an artist and that's how it should be. I personally don't care much for the way my own comic started, heck, i had some unnecessary scene but i had to make it work and not to mention the art can be defiantly better but that's good because it shows progress.
I use it as a learning experience and keep moving forward to finishing the comic. and by the time i start my next one, i will have learned alot from the previous work.
you will never be satisfied with your work and that's ok because its a drive you need to strive as an artist so you become better. but if you believe that redrawing chapters is worth the time? by all means, go ahead. to me it's just a waste of time. and the more you redraw the pages, the more the previous ones you've worked on looks lame and its a never-ending cycle.
so back to your original question and my answer to that is a " NO, NO HECK NO", lol i will not waste time redrawing pages. maybe a page or two, but chapters are a no go zone for me. too much time is needed to accomplish that and id rather use that time to finish the series.
just my two cents