I can only imagine this for now, but I keep thinking of parts such as port hinges, or pintles and gudgeons and similar parts being set up as base designs then a pre programmed set of scantlings for a given era and ship size in a library of sorts. Pick and choose the era and rate of ship, click on it and either a 3D STL drawing or some such thing can be downloaded and sent via email to any 3D printshop to have parts made. It is done now very easily with 3D drawings but a library that anyone can use seems possible. For cannon, it is cheap ($0.75) to print a perfect one now and there are many dozens of drawings available for free that have been discussed here at SoS but a more complete library with caliber, length, pattern/era, nation seems achievable even now. Even if it is not there yet, it is nice to dream as they are accurate, so much better in appearance overall and less expensive parts than having to use aftermarket sources that provide minimal choices at ridiculous prices. I prefer wood for parts that were wood, but many folks are good with parts that were really metal but printed in resin for the model. Sorry to carry on but the future is here and really fascinating.
Allan