I think that you should work on making it even more portable so that it can be used in almost all platforms....what about those motarola chips in cell phones now, i guess same chip base as the gamecube2 and xbox2 wich are in develpment. Also What about making the code Printable or at least savable as traditional C files or whatever. This is only to promote open liscence games to be created using it since you need to have a way of giving them code...
~peace~
Edit: I also think multiplayer online support should be added. I have absolutly no idea what this entals, but would increse the power of GE a million-fold. *crosses fingers* I hope you consider multiplayer support.