I know this is a little late, but I would love to have a tray or frame that fits over the hero dashboards to help keep the gems in their respective locations.
To clarify, the hero cards have gems placed that can easily be moved or displaced (especially if the cards have been laminated). A 3D frame that the character cards could slide into would help keep all the printed information visible, and allow you to swap out different sheets for different scenarios while keeping gems separate.
If the frames boarders also run along the boarders of the gem pools, it would separate the gem pools and help keep the gems more organized during play. Not to mention more resistant to to sudden fits of crom rage.