I created two charts when the custom charts feature first launched for Author Nationality and Book Setting. These involved fairly long lists of tags, and when I first set up the charts, they were in alphabetical order.
In the years since, if I read a book that is set in a new country or by an author in a new country, I have to remember as soon as I add the tag to ALSO go and add that tag to the chart. Sometimes I don't have the time to do this when I'm doing other things.
This means that right now, I know that there are countries in my tag list that are not represented in the chart, but I have no easy way of finding out which ones because there is no way of reordering them.
I'd love the ability to at least be able to reorder them in the setup view to be alphabetical so I can compare my tag list with the tags that are already associated with the chart.
I second this (or at least a version of making tags easier to assign to charts)! I would love to be able to just have a list of tags that you can toggle on/off for a particular chart from the top of the create/edit chart screen, rather than scrolling, clicking, scrolling...
An easier way of categorizing tags would be awesome - like a meta-tag, almost? These tags are author tags, these tags are setting tags, etc.