You can implement an ELO system quite easily but the only problem is pools of isolation where certain fighters only fight within their group and no one moves between them like the PBC or RJJ at SMW. You need at least a number of common opponents to move between groups for it to work.
There is also the problem of sanctioning organizations holding conventions at exotic luxury resorts, paid for by specific promoters. For example, Don King used to regularly pay to stage the WBC conventions. I don't need to point out the conflicts of interest there.
Comment