Firefly's data-product viewer (i.e., the ObsTAP results screen) should have a way to display multiple HDUs from a single data product as a grid.

This arises, in particular, when looking at the 16-HDU LSSTCam raw images.

It is also relevant to looking at the variance image in WCS-lock or pixel-lock with the flux image, since we don't currently support directly overlaying the variance image on the flux image.

It's understood that there's a conflict between the current "display as grid" meaning "display multiple data products from the data-product table in a grid" vs. "display multiple HDUs from a single data product in a grid". Perhaps the latter might only be available if you pin the data product?

This requires some UX design effort.