I believe that libreoffice-bin users would find it helpful to have a post-install notice to let them know that the standard PDFimport functionality is available only in the non-bin package. That would probably reduce confusion for those people (such as for myself and [1]) who wouldn't know the background information about why PDFimport was left out of libreoffice-bin. If a post-install notice is added, perhaps it would also be worth noting that the app-text/pdf2oo package could be an alternative for the missing PDFimport functionality. [1] http://forums.gentoo.org/viewtopic-t-953632-start-0.html
Nah after thinking not worth the effort. 4.0 will have hard-dependency over the poppler so it will be moot. When 4.0 binary is generated it will contain the poppler.