You are seriously going to restrict based off of what is unknown instead of setting limits for writers to work off of. I'd rather be shackled with limits than to be told no because of theory. Lets be frank, any force user is an unknown quantity. Any writer can manipulate their character to have godlike powers. But we trust them to put limits on their character. But its your circus. Though I would recommend that if you are gonna forbid something before hand then it should be stated in the opening post to save on people wanting to do something you clearly have already made up your mind on.