Perhaps now we can move to a single resource type "credits"? I know this isnt really a small issue.
Resources have moved away from the early days where most ships needed lots of metal & crystal, basically when we started with the 4 races. Other wise you would end up with planet with too many of one resource they didn't need.
This will help newer players get into the game, with out the forced resource swapping.
Single Asteroid, multiple outputs:
Or perhaps a way for a planet to specify the percentages they mine.