MacBooks sell like hotcakes. I ask at every Apple Store I visit. They do have 8 hour or better battery life - isn't that your parameter? You want them to make it thicker with a lot of empty space?Apple has no clue what to do with the PC market since Jobs passed away. (RIP) since then that have gone nothing but backwards.
Laptops are phones or tablets we don't want them razer thin we want them comfortable but powerful. We don't want 15 hours of battery live 6-8 is perfectly fine if the internals justify it. They just don't have a clue.
...And just have no idea what they are doing.
Apple seems to know what they are doing with computers. At least they are not shrinking computer sales like every other manufacturer.