Well, I understand that popups for all 17 columns are not feasible however please reconsider the idea to remove IPTC Lists for these fields altogether. It is pretty frustrating to add "Physical description", "Source" or "Creator" manually again and again!
Please consider two solutions, alternatively:
- Keep IPTC Lists for all 17 columns and let user choose which of the columns he wants to have accesible by popups. I think for most of the users 6-8 popus would be enough.
- Keep 6 "default" IPTC Lists and keep the popups for these lists.
Personally I'd prefer the first solution as I am not sure the columns I use are the "default" or most popular ones (I use Title, Creator, Date Created or Circa Date Created, Source, Physical Description).