At the end of the month players' missing weapon blueprints are automatically filled up with the beginning of month, score award. I presume the game checks the first player, on the left and dishes out blueprints until a character has all, then moves onto the next character and does the same.
MSE, is it really too much to ask that the same system is used in the acquisition of daily blueprints? Would you please only give out duplicates if said character already has all blueprints already?
Seeing as you've dropped blueprint award drastically, by about 80%, this is the least you could do. I'm finding and I should imagine everyone else is too, that if you have one blueprint already and are looking for two there's more chance of receiving a duplicate.
MSE, it's thing like this that really piss people off.