well its funny but i dont see a reason why it would need that huge fan.
be a bit of booger to wall mount
Surely boogers are easy to wall mount? Just flick...
I know this is just a photoshopped Mac Pro but I thought it would be cool to look at a Mac mini in the same format - as I'd imagine that is the route Apple is going to take.
The round concept doesn't quite work that way. the components would be ultra specialized in a model like this. It would lack any thermal core(a major reason for the new mac pro design). The mac pro's components fit in the new pro because they're sitting vertically. Your concept would likely result in a larger mac mini.
Unless you can find a round hard drive and RAM this won't work.