My thoughts on the original question posed on this thread
My answer - "It depends". My 1st thought is that PRS has to convince themselves that they have something that they think they can sell enough (volume wise) of to justify adding it to the core line and pricing it in line with most guitars that are a part of the core line. A good example is this years McCarty 594, which came out of a PS model. Others can be extensions of existing core models (P245).I don't think there are any hard & fast rules on how many core products get issued each year. I am sure that PRS looks for ideas for new core models from all sources, including this forum and from all the various PS guitars that they make each year