I think most of the changes seem reasonable. I also like the reduced lefty benefit for pickoffs (yes, I know this is fighting words coming from a righty dad). I do agree that some sort of a time clock or reasonable amount of time between pitches is helpful (and having the batter call time should be limited as well). We always teach that it is the "pitcher's mound", but when somebody tries to overuse it, it ruins the pace of the game.