hello,
for some time we have a lot, a lot of blue prints not only in the mysterious containers but also in the pirate hideouts… I find that there are too many to the point that the price of the space scanner is becoming too expensive for what it brings…I remember a time when we could find enough to build destroyers, which brought a lot of people into open space 
Also, where did the pirate turrets go in the Guardian stations, new Eden and Mendes? It was quite nice!