Mineral boxes are very straightforward save containers which take advantage of
the fact that they can only store minerals. In fact, the feather weight used
to not be dispelled when putting into a mineral box, and the result was that
only the feather-weighted amount of material was stored, leading to
potentially huge losses. So, you really don't want it going back to the old
system.

And since it is not my code, I'm not volunteering to rewrite the things either