One of the things I do constantly when reading resources that contain footnotes is to click them to bring up a floating window that allows you to read the footnote fully, including clicking any resource references in the footnotes. Hovering over the footnote does bring up a tooltip, but that's not the same.
I would really like to see this addressed sooner than later because I can't easily read some of my resources as a result (e.g. the NET Bible).