I tried this out when you 1st put it out, maybe a year ago? I can't remember what the issue was, but I couldn't simulate what I was trying to build, so I didn't go any further. If I get some time, I'll download it again and see if I can identify the problems I was having.
It's not for everybody, and not for every bow, but I have always wanted something like this when going for performance. It would be great to know that bow A with deflex here and reflex there, will theoretically store more energy than bow B with r/d in different positions. No, this doesn't build the bow for you but it could save you from building 10 prototype bows to find the one that stores the most energy.