Love to see the sort order be built into the gui so one doesn't have to go into the settings menu anytime they want to change it, but I don't know what would be involved in that and if it is even possible.
In the meantime, something that I don't think will be too difficult as you've added combinations before...can you add a sort option for "ore type, then count remaining". I could see where some people might want it, but because the percentage is based on an semi-arbitrary start value and 10% of one patch and 10% of another will be potentially very different number it is almost useless in my opinion, where as the remaining count is a fixed number.