I think I see what you are talking about from your excellent graphic. So what I took to be a rigge bopard sandwiched between the ends of rafters, like conventional is really below and is supporting the rafter pairs at the peak. So it is like another bent that runs in the center of the buildin, down the length and it supports the common rafters at the peak. Would I still need collar ties? I like this very much as I agree with your thinking that it will simplfy dormers. The only difference is I planned on 2 dormers per side each 6 feet wide. I had also planned on a chiney centered both length and width which would not work but that can be shifted forwardon one side with dormers to right and left. Thanks, I am starting to seem some possibilities. Joe