A problem is a lack of judges, the cost to bring in outside judges or the validity of some the judges. This creates the problem of trying to recylce the ones you do have which becomes a problem in itself. You may get new people becoming judges but if the majority are not dancers, didn't compete or didn't get to a high level, though they pass their judging tests, they don't get hired because the competitors feel they should not be judged by someone who doesn't dance or dances at a lower level then those they are judging. The only way out is too encourage the upper Champ level dancers or Pros to get their judging papers to increase the pool size but I don't think many want to go for it.
interesting - it takes a pro that feels a responsibility for the sport, as distinct from a one that just wants it to provide their income - difference between giving and taking. Perhaps most dancers simply don't appreciate judges enough either - don't realize that doing juding is in itself both an honour and a sacrifice - I know its not really a paid occupation (except for the big comps you are not going to make much money from it).