in every division they should do some sort of round robin tournament in every division where there are four separate champions. they would pick at random the two matchups and then the winners would go on to fight each other and declare a undisputed champion. it is exactly what boxing needs. it would create loads of excitement, upsets, and pretty much everything boxing has been lacking lately. it would undoubtedly create a ton of interest in the sport of boxing once again.
There should be a mandatory unification fights between guys who have at least 2 defeses. For example if someone win the title he have time for voluntary defense, then mandatory defense within organization then mandatory unification.