I haven't rebooted any of my comics, but I have a fantasy comic I made in 2008, which I can compare to a fantasy comic I started making in 2015. 8D
Here's the 2008 comic page of an old oneshot:

And here's the 2015 comic page of The Ogre Cook:
Both are introductory pages to a second character that appears in the comic. I think the biggest difference is the way I use screen tones and shadings. XD