Last Apple genius I spoke with wanted to charge me $35 to replace a screw, and said Apple had to be the one to put the screw in.
Typical Apple control freakery at work again, I see... Seriously though you've got nothing to worry about. Bringing the thread back on topic away from the innovative argument, the design is correct. Heat rises, so having a fan pulling air upwards is the correct way to go. Look at the Xbox One and 360S, Their heatsinks are on top, with the fan pulling hot air up out of the vent in the natural "heat rise" way. You lose most body heat through the top of your head.
That's why Microsoft say they work best horizontal, and not vertical. Look at the 360's before the S. They had fans pulling hot air out the back, where inside the console the heat would be trying to rise away from the heatsink out the top of the console.
It's simple science, and I've explained it here for you, so this thread should be closed. To close the Innovative argument, Apple are "innovative", as they take existing tech and modify it, slapping their badge on it to claim it as theirs, like they did Siri, but they're not "inventive", where they actually invent stuff. The Japanese invent stuff, for the Chinese to counterfeit, and Apple to use Chinese Foxconn staff as slave labour at 12p a day wages. They're unethical, that's for sure. Most of the tech you'll find in Chinese branded IC chips is probably a copied Japanese invention.