Hello! big fan of this mod. I'm cooking with it.
As someone who has built a tileable blueprint with the intent of building the factory that builds the factory: https://fprints.xyz/my-blueprints/blueprint/a1403061-3772-47db-833f-15c6b8c0e0f5

I want to encourage a deployment mechanism that can utilize parameterized blueprints, but apply them at a later point (after they have been carried by train to their deployment position) but with desired parameters.

I could accomplish this if there was a BAD chest command that could make a copy of a parameterized blueprint and use the parameter signals to return a parametered copied blueprint, ideally from a blueprint book.

Hello!
I got your idea and wrote it down in my TODO.
Blueprint with the applied parameters are already being created, but they are used as temporary ones. The question is how to implement the new command, and how flexible it should be. I think first I need to make a book management system (extracting/placing pages, deleting/adding, reading/writing icons, etc.)