Hi weddi-eddy,
Not exactly the same thing that you asked for, but I created a script that makes splashscreen random and it wil also get new folders with new splashscreens.
You can check it here:
Splashscreen Randomizer
Also my gallery has over 35 custom splashscreens:
https://github.com/sur0x/retropiesplashscreen/wiki/SplashScreens
