I think that it’s kind of silly that features just increase the quality (or decrease if they are availible and not used) of games even if they are completely crazy or illogical.
For example: Mouse and Joystick for a console game…this just adds costs to the game, and I tried to make several console games without these 2 features and they all bombed, they were great combinations like Fantasy/RPG and such and had the right sliders at the right values and they all still got a bunch of 3 or 4 in reviews.
Then there’s another feature which is “open world”, again, if I dont use this feature on games they will just bomb, even if its a dungeon game, or a virtual pet game, or a sports game…
Some features should also be exclusive for some systems, mouse and joystick should be exclusive to PC and advanced systems (this would kind of balance the developing of PC games, which is really cheap and yields a lot of cash) while you could make a kinect knockoff that would be exclusive for the mbox and such…