Door code is in and works. Elevators and teleporters do not (to my knowledge).
There are some design docs, but not publicly available. Also, there is no public CVS, they use StarTeam for the code repository rather than CVS. I don't like it either, but what do ya do... Its not the best organized project from a Systems Engineering perspective. (I'm a Systems Engineer for a big company, so I probably shouldnt compare apples to oranges).
All in all though, a well rounded project, they make leaps and bounds with every release and it's a great bunch of people involved, I've had alot of fun working with it, though my assistance has been limited to stuff of the periphery. If you're interested in assisting/coding, you should hit irc.trifocus.net #eqemu, and chat with one of the ops. Image/Kathgar/Khoung(smuck
)/Pyro about joining the development team.