Which frame geometry database to connect to BikeCAD?
In my opinion, the big selling point of offers such as bikefitting.com (by Shimano) and Retül is their large frame databases. In the context of BikeCAD, you could use the fit advisor to determine a starting point for the bike geometry, then potentially refine it by putting the rider on a fitting bike and then you could use those databases to automatically create a ranking of the frames that come closest to the target geometry, among all the available frames on the market.