"Like the Crate things that went before them, Blueprints can drop with uncommon characteristics like Painted, Certified, and Special Editions," Psyonix wrote in Rocket League Trading a blog entry sketching out the framework.
The thought is that players will comprehend what they're getting from Blueprints rather than "shock mechanics" of plunder boxes, which have been disputable. In May, United States representative Josh Hawley proposed new enactment that would boycott pay-to-win mechanics and prohibit organizations from selling plunder boxes to kids. Psyonix's change to Blueprints is one approach to deal with the debate. Including a plunder box "X-beam scanner" to Counter-Strike: Global Offensive in for French players is another way.
Anyway, in Rocket League, Crates will stay until the www.lolga.com December update, and when it does, Rocket League keys will be changed over into Credits. Containers, as well, will be changed over into Blueprints "of a similar arrangement," Pysonix said.