The problem is - there aren’t any. I was supportive of the new system. But it dpeneds on SOME reasonable chance of acquiring blueprints, which there isn’t. The number I have gotten since the new system: zero. I HAVE received a couple promises of blueprints, in special event boxes and such - but since they are random, then for a player who’s been around a while they are almost by definition duplicates, in other words not a blueprint.
I think the skin system is ok (not great but ok) but if they are going to be so miserly with the blueprints, then end result is the same problem as before - a game where there is no progression, so sense of grinding to get something (which is why the original 3-tier skin system was actually the best they ever have done).