Current problem
rearranging channels within a favorite category is extremely clunky (non-existent, besides the quirk that channels are always inserted at the top; so you can order a category by moving every channel into the category it's already in, bottom to top)
moreover, it's impossible to rearrange the categories!
Proposed change
the UI for rearranging guild channels should just be used in favorites as well. the icons for a channel look slightly different in favorites, so the actual widget might need a little tweaking, but there's no reason why the editing experience should be THIS different.
Platform
Android, iOS
Additional information
in the attached video, i show the status quo experience of rearranging favorite categories. then, i show how it already looks for guilds (which is much more usable)