It would be great to have the possibility to re-arrange collections and even gather them inside a folder (withought having the folder to interfere with the slug)

Example: 2 collections: Staff Members and Professions. These were created at different times meaning they are probably set apart because I've created other collections in between these. So I'd like to have possibility to re-arrange so they're next to each other in the collections list and also have the possibility to have them inside a folder in case I'll end up with a lot of collections.