It is kind of nice but too many things just don't work write. I would rather start everything my self and in the right workspace (some are starting up in different workspaces).
The 'settings' > 'sessin and startup' dialog on Application Autostart tab basically says you have no control over restarting what was previously running.
Seems like I grumbled about this during the beta, but lost what was said about dumbing down Xfce startup.