"Name a feature that you would like to see implemented into your console of choice"

For the XBox 360, I would have a d-bag detector installed. It would detect if a player in an online game is wearing Axe Body Spray, measure the height of hair to ensure it's not gelled into douche-spikes, detect the keypoints of facial muscles to ensure that a douche-pout is not being made, and sense whether any music is being played in the background. If all of these criteria are met, a jet of pepper spray would be emitted directly into the player's eyes and the disc tray would melt shut.