i play a mix of both so i actually don't want blueprints to be expensive XD but i do get what you mean. i don't mind blueprinting to copy paste, but i certainly would like to be able to snap and mirror those blueprints.
although, there WAS a recent change to how the blueprint works that makes it vanish when you use it- even in creative. i did most of my building before that change and it's not one i'm fond of. i also think that it would be very nice if making a blueprint automatically added it to your inventory, instead of requiring that you go to a bench to get it... perhaps things like that would make it more useful for you as well?