I have had some experience with using both Maya and Unreal Editor from going to iD Tech Camps during various summers and am aspiring to breach the field of game design earlier rather than later.
It's just my opinion, but I think you deter people away by making it private.
If it were open, more people including myself, would play it. When a massive amount of people use and work on something, they all learn quickly and can communicate new ideas (on improving). From what I've seen already, which isn't even much because I'm lazy :), has enticed me.
what programs are these compatible with?
it's good that people try to put as much detail possible into minute foci