I have also spent a lot of time making sure all the images are in the correct place and many other things, and then vigorously tested them each, individually, for many criteria "Live" with the emulator. Every change that is made I make sure that nothing gets broken. (Otherwise my testing thread is invalid).
I think at this point, I'm just keeping my edits to your skins to myself and I'll just add your changes to them. That way I'm not stepping on your toes and I'm not frustrating myself anymore by working against you on this.
For example, I used your alternate configs on NES and now it shows the FDS controller on the top of the game select screen instead of the NES controller. Just one of a thousand things that could break when we're working against each other...
Also, the 16 configs that you uploaded are named differently now than the 16 that I was using. They're all capitalized now, but where mine said "Artwork", yours now say "Screenshot" (or some subtle change in wording). All I had done here was capitalize the names you used. You now changed the wording on at least 1/3rd of the configs, so they don't match.