Group By Sublist should respect sublist order rather than alphabetical

In List view, if I group my tasks by Sublist, the groups appear by alphabetical order by default and there doesn't appear to be a way to change this. I think the more relevant ordering would be the way the sublists are arranged in the tab bar, as opposed to alphabetical ordering. It would be nice to either change this default behavior or at least allow the User to select which one they prefer.