So blueprints are a silver sink yeah? At least in intent and execution it seems, I think they are wildly too risky at the moment. The 1000 ish silver price point for a completely random roll of any technology isn't a good trade at all.

Would it be possible for blueprints to cost more, if not significantly more, and be generated for specific technologies or at the very least technology ranges? Say an "Industrial" Technology, or "neolithic" ectra. With cost scaling for later technologies. At the moment they seem to be pretty unusable at most game stages. Early game you don't have enough money to get much use out of a blueprint, considering almost every single one you get will be too advanced to help you, and early silver is better spent getting advantages and not a dozen blue prints.

Mid game and beyond you rapidly start getting blueprints to tech you already have so often that they don't seem all that useful either.