Since 2.0 has the new feature to open the users bib reference manager of choice, I had a thought that I wanted to pass along: Could you make a new comment/footnote type environment for the citation keys that the bibliographic software uses the build the references list? What I envision would basically allow the user to put a reference comment at the desired point, paste in the appropriate citation keys, and then would hide them or relegate them to that new sidebar area; replacing the pasted text with an asterisk or smiley face or little book symbol or something. During the compile they would be put back into place without altering the formatting allowing the bib software to be run directly on the output. I know that this could be done in some measure with comments, but I thought it might be nice to have a formal environment for that purpose.