Yes, I have, and to be honest a part of it is because a lot of people have even told me that I should redraw the first three Episodes of my series since they were traditionally drawn, while the standard now is I do them all digitally. Yet I have like, two problems with that.
One, I honestly don't know if I'd be able to capture some of the fun and energy the original pages have if I redo them XD Especially in terms of faces. But primarily I don't do it because I'd gets tuck in an endless loop. It just doesn't make much sense to me dedicating lots of time to redrawing already treaded ground when I could spend that time just creating a new episode, not to mention, by the time I finish remaking the first three, then the fourth one will not look up to par with the quality of those ones and then it gets into a whole new loop haha!
I say, just leave things as is and let them stand as a testament to how much you've grown as an artist since the first pages. It makes the quality of the newer stuff all the more impressive if there's something to compare them to.