Maybe you could add extra special features to the Professional Edition of GE that you can't get in the standard version.
It would also be a good idea to make the Professional Edition more
affordable -- maybe 20 to 30 dollars instead of 50.
Anyway, GE is only at version 1.1 -- Game Editor has only been around for about a year. Your editor should probably gain popularity first.
By the way, your editor is pretty good, for only being around for a year.
Keep up the good work on making such a fine editor!
