goley you must be an announcer for NBC because as they are famous for saying, "If he hits this putt online with the right speed, it will go in."

Of the three you mention, #3 is, IMHO, the most important and is the biggest flaw I see in truly horrible putters. Leaving putts 8-10 feet short or bombing them 8-10 feet by the hole all day is going to kill you.