I noticed in the script that you now allow for a preset of Custom Splash screens. It would be nice to have a list of the presets on the website so that we could see what you have included.
Does the script automatically read new images from a directory? That would be cool if it doesn’t. You could simply upload your images to /<dir> and restart the script to set it.
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.