If crumb is free and open to community suggestions, why not make the product open source? It would allow developers to more directly contribute to improvements and respect user's software freedoms.
Perhaps the author would consider opening up just enough that the community can contribute the code to add elements to the parts catalog, as that seems the most critical.
Perhaps the author would consider opening up just enough that the community can contribute the code to add elements to the parts catalog, as that seems the most critical.