Well, given their success as a release, I’d say that they do inderstand the medium, and that not all RPGs must be made in the same line. I’d hate to play a game where I rescind all power to the GM.

I know that GMs always have the final say in any system, but having an expectation of what is going to happen is crucial to me as a player, and as stated in another comment, GMs need to have fun too, and sometimes having a well defined system is what a GM needs to feel like all they need to do is design and let the game take reins for balance. I understand that there are different types of GMs, but that’s kind of the point.