Ideally retired or inactive (non-competitive) MMA fighters should be judging MMA. I think all true Athletes/competitors would give equal credit to the fighters. Qualification would be on a per fight basis. They wouldn't let certain refs work specific fight because of relationship to the fighters involved. Above all else,you HAVE to have people that know the sport. and in the case of MMA you are looking at a mixed bag of combative sports. All of which are judged on very different areas. Militech would be a fantastic judge.
"Courage is resistance to fear, mastery of fear - not absence of fear."