I know the game designers have a plan for the duplicate blueprints but I do not know that it is cast in stone. So there is no harm in throwing out good ideas.
However, a 'good' idea is one that is well researched, well laid out, in the proper format, and agreed to by a huge majority of fans. Please read the 'must read' threads of the idea section and then edit the opening post if you cannot find a similar idea already suggested. (I'm sure you will but its up to you to do the research as its your idea :-)