Erm, I don't see the big need for it.
Not that many people used it.
Nor is there many who GSC code now.
(Here @ MPGH that asks/shares)
So it would be for private versions, but...)
It would be nice if we could include languages. not only GSC.
And make it light, so it's more like notepad++.
But then, I think most would stick with Notepad/Notepad++ :S