Re: 12 round limit, saved lives?
In thory yes but it is imposible to know. There have been tradgies in fights going 12 rounds or less. The question is how many 12 rounds fights would have ended in tradgy had they gone 13 or more rounds? Most boxing related injury comes from an eclumlation of punches rather from a single shot nomatter how hard. So saving a boxer from 3 rounds of being hit pontintioly saves lives.
In the 12 vs. 15 debate I favor 12 rounds with 3 extra rounds in the event of a draw.