Prototype sandopolis layout

Something I always found strange was that every Sonic 3k level has a mod that replaces the level layout seen in a prototype build like the 3c builds or the 1103 build. But the single level missing is Sandopolis. I'm not sure why no one has made it a mod. I get it, sandopolis sucks as a level but if you have many prototype mods, it feels very weird to play the final layout of Zone 8 (or zone 9 if you use the Original Zone order mod).