My brother-in-law LOVES Blue Print
Your brother-in-law is right. Blue-Print is AWESOME.
I never would have played it, but he had a story from his youth of a family trip to Florida where his brother was sick, so, while the family tended to brother, he walked over to the convenience store and played Blue Print for a week.
Some years ago, a dedicated (and gutted) BP cabinet came up at auction (I think RayB was standing beside me when it did), but I deemed it to be too far gone for proper salvage. That was a sad day.