Having worked on some really famous products (not games mind you) you might be shocked that engineers don't know every single feature of any one program or game - its mostly because they are hired to do one component of the program and that is it, and some programs are split into literally hundreds of different parts that have their own teams of engineers.

That said - you may also be surprised to learn all products have thousands of bugs and they always will have them. At my last job engineering relied on support (which I was in charge of) to prioritize bugs for them - because they really did not know for the above reasons, and if they do play the game or use the program - chances are it works for what they want it to do and thus there are no real breaking bugs.

So yeah this is an absolutely brilliant idea!