Thanks, I appreciate your kind words. Some of the ideas I have in mind are: 
 adding information concerning online copies of journal papers (lots of journals publish at least a part of their papers online for free - the system should inform the user that at this and that url there is probably a online copy). 
 more or less automatic updating of the db according to the growing use of ref templates in WP articles
 extending this to multiple Wikis, e.g. German, French etc. (need multilanguage support, but also separate wikilinks according to language etc.)
 extending this to other areas, Physics, Computer Sciences etc.
 user management, which will become necessary when the DB gets the attention of vandals etc.