Unless I'm mistaken few if any users (except those owning their own sever) would be able to implement LDAP anyways. It is not a USER profile type installation.
Just yesterday the founder of my largest community and my self were just discussing going that route. He still has plenty of activity in the community and even though I actually own it I still include him in all my decisions and new things. Sometimes he likes the ideas and we do it or sometimes he don't and tells me why, I rarely don't do it anyways, lol.
