I've said pretty much the same thing on the doctype question, and probably some other questions. At the very least the use of the stackoverflow name is confusing to new users, but I'd agree that meta feels like site about stackoverflow, not a site about LOJ sites.
At least in part that's due to the fact there's much more stackoverflow users, but the hostility towards doctype by some people claiming doctype was not fitting with "the stackoverflow community" really showed that there was an ignorance to the existance of totally different user groups who weren't interested in programming or stackoverflow.*
Perhaps this will change when superuser goes live and becomes bigger than serverfault, which is only a matter of time imo.
The name isn't just historic, it's symbolic. Until the name changes to something else the other sites will be seen as sideprojects of stackoverflow, and somehow less important.
* I don't mean to imply that was the opinion of everyone, or that there weren't other more practical reasons for doctype to be seperate.
