And, just a screenshot rather than a video this time, but high-res mode is practically complete now (bugfixes aside of course, I'm sure there'll be plenty that end up being needed). The only thing that's not currently working correctly is the minimap.
Oh, "but the minimap is part of the skill panel"? Yeah, I decided to high-res the skill panel too. I won't be changing anything outside of gameplay (menus etc) for V12.8.0 though; that, if it comes at all, will come later.
EDIT: Shrunk the image to half size, since no clarity is lost by doing so.