The big change in the rules is from many penalties being automatic to being discretionary -- "accidental" gives a player some room for judgement that did not exist before. If you kicked your ball while searching for it, it was a penalty; now your intent matters. While some recent PGA penalties showed the harshness of the old rules, I am pessimistic about the stretch that players will accord themselves, and the arguments that will ensue when those judgements are questioned.