I know you can do 4 fights in a year once but wouldn't it be damn near impossible to do in back to back years?
Frankly I think you can fix most problems with three rules.
- If you pull out of a fight you are prohibited from contending for a title for one year.
- If you are a champion and you pull out of a fight you may not return as the headliner only the co-main eventer.
- No card will feature more then three different weight classes.