When I first read about this not-knowing-what-you-get idea from the minifig packages, It was obvious the special minifigs would be populair. it was obvious, some figs would be more populair then others and some Afols With Money would buy much of some sort of figs. Also that some afols don't want to get, or get to many of some other minifigs. So it was obvious some people tried to break the code and generously give the information to the other Afols, so you can pick the minifig you want.
Strangely Tlc didn't think about that. Now they heard of the great demand and the broken code, they stop with this code. I'm not an important economist, but could it not be a better idea to make the packages to see through, so you can see which figs inside and also made more figs? I think they would also be sold like warm cupcakes. (sorry, dutch saying, because I don't know the english version of it.)