I've been IT operations for years, and when I order laptops I sometimes do a little experiment. If I ask people if they want a 15.6" laptop or a 13" laptop, they always say 15.6. If I don't give them a choice and just start buying 13" laptops, everybody tells me how much they love the smaller laptop, and people still on the 15.6" models start looking around asking when they can get the smaller one.

People don't know what they want unless you give it to them.