As an alternative to custom sheets and the like, here's an idea: Allow GMs to select a Google document (such as a Documents or Spreadsheet item; this may need to be done in two separate options in the campaign configuration method) to serve as a character sheet. I'm not sure how best to implement this, but at some point a copy would be made to allow the players/GM to access a copy of the document. This could be useful for a game like Open Legend, which currently has a functional Google spreadsheet for character records but no Roll20 character sheet; it's a huge time-saver for GMs who would be happier using a pre-made thing than trying to port a sheet into HTML/Javascript and the associated CSS.
