Whatever they bring out I hope its better engineered and tested than the previous generation!
In the "good old days" hardware was designed with much more headroom regarding the layout of components.
If you disassemble a really old Thinkpad you see components using screws and clamps like fans, connectors, etc.
Keyboards were mounted on aluminum plates to make them stable.
Cooling was easier because the chips were not that highly integrated and would operate at their limits all the time.
Today, everything is manufactured towards every possible limit.
I do believe every future MacBook will be disappointing in this regard. It might look amazing an people might admire the engineering advance, but for daily use by human beings it would be so much better to not aim towards these limits all the time.
How long to you really carry your MacBook or use it on your lap.
At the very moment you put it on any kind of surface it really does not matter if it is one millimetre thinner or wedged.
I would welcome a much more stable version that had no failing GPU's, broken trackpads due to battery deformation,
broken ports because of thin metal casings, etc.
I just don't think we will ever get anything useful out of Apple again.
I bought a 2006 MacBook Pro, the first Core2Duo with Tiger 10.4.
To this day this has been the most amazing Laptop I have ever owned.
I owned a 3G PCI Express card with an external antenna, a FireWire 800 external drive and was really happy.
Today I have to deal with flaky Ethernet adapters or have flaky WiFi.
I know this rant is one of hundreds, but I really like to have a visible petition page on MacRumors to create visibility for these concerns.
A little side story: Mz Retina MBP died from half a cup of tea.
If you spill it on the keyboard, liquid can not move anywhere but directly to the logic board, because the keyboard and battery leave no space for liquid to flow around these components.
Then the two fans immediately swirl all the liquid across all chips that are directly at the front cooling slit, the only place were liquid has to go through,
The end result: Battery, Keyboard, Trackpad, Logic board, everything immediately broke.
The case is hardly reusable due to glued components. The only thing left is the display.
No chance for any kind of repair.
"Tough luck", I hear you. But I spilled stuff on older cheap laptops and they did not completely die because layout wasn't that dense.
Sorry for the long rant.