Originally Posted by cossayos
Other companies use a nice euphemism for that: Streamlining.

Adding something for the controller doesn't make it mandatory for the keyboard and mouse, unless you specifically choose to develop for the lowest common denominator (make the game fit the controller, rather than vise versa). Since the game already exists on PC with PC functionality, and the next games are using the same engine, I don't see any need to be overly pessimistic at this point.