Wow that looks brilliant. Will work on it this week, I wonder if I can do anything with an already-built set of advanced rules by changing the division type, verifying, then changing it back and re-verifying. Have you had any success with anything like that? Maybe I can import my rules or something into a fresh file but that usually seems to throw up issues.
TBH I've barely touched the editor since the New Year, had some holiday time and came back refreshed and focusing on other projects. The US Open Cup news made me think about it, but for now I think I'm happy with a file that focuses on the 2023 rules and applies them forever - if SI don't plan any further than one season at a time, why should I? At least until they finish patching things so we don't get messed up by extinct or newly created teams or competitions