Re: Just like the MacBook Air
IIRC the first release of MacBook Air, a.k.a. "the finest personal computer ever made", was famous for fitting into an envelope and for not having effective cooling for that very reason. When it got too hot the CPU throttled itself down, which resulted in the machine craaaaawling if forced to do anything more strenuous than email. By now people have learned to cool thin things (and make cooler CPUs) and to convince others that email is all you need (just review some comments here).
I agree with rpc27 - the Air genealogy is pretty obvious. I suspect the thinking is: the "target audience" will buy it anyway, we'll add stuff to MkII depending on what they complain about the loudest, we'll call the improvements "magical and revolutionary", and they'll upgrade.