If the sam code is optional or easily replaced, this could evolve to become a serious, modern text editor with a truly liberal license (something surprisingly absent from the current landscape, to the best of my knowledge - I've done a couple searches for an editor that could be embedded with an LGPL project, and the choices were pretty limited. This looks quite interesting.
From a portability standpoint, is there any chance of creating a native Windows version using something like http://www.projectpluto.com/win32a.htm ? That was another kicker when I was searching previously - only the really big editors like vim/emacs appear to have Windows ports...