TL;DR
Add a button in the blueprint GUI that saves a copy to character inventory.What?
See above. Simply, the game lacks an easy way to create a duplicate blueprint.It is possible to add blueprints to the library and then get copies that way; this feature would be a QOL improvement when designing blueprints.
If implemented right, this would also supplant the current way to move blueprints from the library to the inventory.
Why?
It's possible to add blueprints, but only in a destructive manner. When designing a blueprint book, I find I often need several copies to edit/upgrade.Also, the Blueprint Chest mod would be easier to use.