So you're talking about drag & drop sorting the in ACP, or by user on the front end, etc?
Sorting within category in ACP?
Sorting as they are presented when you go to select them when creating a thread?
The issue is of course that you have have one prefix that is applicable to multiple forums so sorting on a per-forum basis isn't really going to work for everyone, unless you have multiple prefixes with the same name instead of defining one prefix that you can use in multiple places.
Also the forum to which the prefix applies isn't displayed in ACP, those are sorted by category which is different
Right - that is mandated by the prefix display order, so basically you are wanting to be able to re-order the prefixes without going into each prefix to change the value, correct?
This is what I mean by being specific - if you want someone to like the 1st post (which is what XF staff uses to prioritize development requests) then you have to be very very specific, or else no one will click "like" and your suggestion will fade away into the darkness....