http://sourceforge.net/projects/eqemudb
... not really sure what to say, it just hasn't been kicked into gear.
I guess the biggest thing is cordination, and the file format each person would be working in. That involves getting the current DB to comply with standards so that we don't overwrite each others work... What version of zones do you work with? Or a way to have seperate versions of the zones. Several zones have been revamped now...