I'm constantly wanting to use CShell but abandoning it simply because I can't do simple text commands i.e. Home, Ctrl + End, Ctrl + Shift + Home, etc.. etc.. the GUI in terms of a text editor is painful to use.
I see this project has a lot of potential, but IMHO I don't see the project going much further than where it is today.
What I suggest is that you make a port to SublimeText, leverage this awesome gui and pull in that community.