There was great progress made with the unibody Macbook Pros and the Macbook Airs but these latest models are so thin that it's actually annoying and leads to issues like poor battery life, lack of repair-ability, and malfunctioning keyboards. Isn't better usability actually more of a luxury then simple aesthetics?
Based on the timing, this seems like a train set in motion by Steve Jobs but he passed away and now nobody wants to recognize that it's way off course and needs a correction.