sounds great, in theory, but in practice you have to wonder what the trade-offs would be.
as iOS and its apps become more and more functional, i think a lot of people will be able to transition to the iPad (i am already there for most of my work). will a single os be overpowered for some users and underpowered for others?
then, there is the weight. it will inevitably be heavier, and i don't see how they will ever be able to get away from fans vents, and somewhat larger cases in order to deal with serious processors like sandy bridge. will consumers be willing to spend more money, for potentially less functionality (dumbed-down osx), and more weight than the ipad?
finally, there is the battery. even now the air struggles to get 5 hours. will apple be able to produce this unified os + light weight + long battery life? if not, will consumers accept less battery life (the ipad is 10)?
i don't see the point. i love ios, love the tablet form factor, and get a lot done on the ipad. i go home at somepoint and do the heavy lifting with my macbook. sure, in an ideal world my ipad would do it all, but more ideal world, my ipad would be using ios with a thinner form factor, less weight, better screen, and longer battery life
