Hello! I am wondering if the custom charts interface could be developed so that if a custom chart has fields that don't have corresponding books logged in the view, that they could just be hidden? This could be manual or automatic (as i'm sure different users have different preferences) but I would love to only see the charts that have corresponding titles (mostly for tag-based charts). My tags are very specific so there isn't a lot of overlap, so in the event that I'm checking a specific tag or group of tags, so I often see a lot of white space for certain custom charts.