I would have one sanctioning body .
9 weight classes
15 round championship fights .
Same day weight in's
drug test in all championship fights
3 judges to judge referee on his performance
rank referees
on judges for boxing match use electronics for scoring .
Today electronics are so advanced you could have one very small censor on the back and on back of head that could pick up a punch that glanced and tell how hard it landed. Hooked up to a computer there would be no doubt who landed the most and hardest punches .
There are lots of good ideas here but keep it simple is the best rule . What pisses me off more than anything is scoring .