Hi
As a researcher, I spend a lot of time browsing through research papers in my field. The most annoying thing (imo) is having to go back and forth to the reference section to see what documents a paper is referring to.
The best solution I found for this is this extension in Google Chrome, which has a feature that opens a little window with information about the referred paper (title, authors, #citations, abstract, link to the paper) when clicking on the reference in the text.
Could you bring this feature to the PDF reader in Firefox?
Here is a sample of the behaviour of their extension: