I have a 13" MBP, and I love it. I ordered a 2nd HDD caddy. This made me think. What if the MBPs were let's say 1cm more thicker, but had more raw power in them. There will be more room for better cooling system hence, better CPU & GPU (dedicated perhaps), 2 or even 3 HDD bays, bigger built-in battery, more I/O ports (eSata, ExpressCard, TV tuners)... etc. I personally would buy one, even if it weights 1-2 kg more. So what do you think?