Microsoft has opened up about a few of the Xbox One’s early prototype controllers that didn’t make the cut. In what might be a shock, some of the test builds included features like a touchpad, camera or speaker, which can currently be found in competing controllers from Nintendo and Sony.

Although the Xbox One’s controller ultimately stayed true to its ancestry, Microsoft even considered a handle capable of smell-o-vision (yes, you read that correctly). After so much consideration and investing millions of dollars into prototypes, why did Microsoft decide to take such a conservative approach?

“You’ve got a great TV with a better speaker than we could ever put in this controller,” Microsoft senior industrial designer, Quintin Morris told Venture Beat. “And it made more sense to [not make players look down at a display], keeping the user’s attention on the TV. We really want them to be immersed in the experience that’s happening in front of them.”

In addition to becoming a bit of a distraction, such amenities are very taxing on a controller’s battery. A tradeoff that Nintendo and Sony have been receiving feedback about from critics and consumers alike.