A question on blueprints

If indeed the Devs are heartbent on making reality for blueprints a thing, then it would be wonderful if they provided a building phase for the player involved. This not have to store all the material up at once in some magic inventory box or infinite inventory permissions but rather provide for an animated building of the structure. This would be a command of add or placing the inventory that has been created in the players normal inventory such as place in blueprint then the inventory would move to the blueprint. Everyone could see the fortress or house in progress as the player plays and adds inventory. If the player loses interest then there is an incomplete structure that will enhance the environmental effects. Other players can see the progress and be amazed.

Quote from migdyn

No, blueprints can be used to copy stuff without using any resources!

I dont understand this as part of the discussion? You can deny blueprints if you worry about the copy of efforts. The discussion was using the blueprints to build without the resources needed to fully build whatever is in the blueprint.