More Specific Role Ranking

It would be useful to be able to rank users within a given role in a way that isn't alphabetical.

For example: You have a role that displays separate from others, but you want users within that role to be listed in an order based on a higher role that isn't displayed separately. More specifically, you might have a role called "rainbow", and the six/seven users with that role each have a higher ranked, cosmetic role that displays their name as one color in the rainbow. This idea would allow those users to appear in the "rainbow" rank, but be listed in order by color instead of alphabetically.

It could also allow users with the same role to be listed by some other method, like how many posts they have in the server or some other stat (although implementing that might be a different story).

Another alternative to the rainbow idea might be simply having an advanced setting for a given role that allows users to have different colors within that role. Users with the "rainbow" role could each have a different color within that role, and the second role that gives them the identifying color in the previous example could be avoided.