Though nice idea, for right now, we're working on getting all parts of Ulib/ULX working with GM13.
XGUI is a big task right now that unfortunately we don't have the time we'd like.
That, and the little bits and peices to be found once every other addon/gamemode that we have no control over starts conflicting causing errors we'll get blamed on.
I'd love for ULX to have a 'safe mode for Gmod' switch.
Just like firefox 'run with plugins disabled', my dream would include 'run gmod ded server with only ULX and in sandbox mode'. - Does it work? Yes? Not a ULib/ULX issue.