https://shopspec.io/ ShopSpec is a deterministic parametric furniture generator (bookshelves, cabinets, shop carts, leg-and-rail frames, multi-carcass composites) that encodes real woodworking intelligence and outputs shop-ready artifacts. Most recently, introduced the concept of value engineering by sweeping across dimensions to batch evaluate candidates that ranks based on sheet purchases. Also have in beta an MCP…
I could tell from the layout screenshots, but one thing to make sure is that you are accounting for the size of the kerf. Being able to set a different kerf size for different cuts would be ideal as your rip vs crosscut are often different blades.
Also, one of the more daunting parts of casework for me is sorting out exactly how undermount slides go. I would highlight any help your tool does with raising confidence in getting those installed. Even having an undermount installation tool separate from the spec work I think could be useful.