The 5 rounds thing is very debatable. There are some 3 round fights where you which there would be more rounds. Then again there are some 3 rounds fights that you wish that would end earlier. It's my personal bias but i hate watching any wrestler fight in a 3 rounder yet alone 5. The best thing for the sport is to break up clinches/guards/no action sooner and return the fighter to a neutral standing position.