I want to be able to reorder rules to change the priority. Currently I have to delete and create or edit rules to get the priority I want. A little frustrating!
Still think the GUID thing is broken from a UX Concept POV. If you want to use it to track more than a handful of campaigns you need to keep a spreadsheet of names & guids to switch between them.
If you could store the list of campaigns in Local Storage / a cookie that would make things easier.