Boy, quite a heated debate.
I, like many others, didn't like some of the tone of the first message. The 'Letter'. What I didn't like about it was the tone of ultimatum. Especially in certain areas. Now, I'm glad to have seen that Morgan backed off from some of the 'requirements' in those areas that troubled me the most (i.e. input devices).
I guess that there's a degree to which I think that the Pro/Con-sumer distinction actually makes sense. It helps Apple more than it hurts them. So, I really believe that it will be here for the time being.
I also expect that Apple will stand by the position that consumer machines don't need that much upgradeability. And, if you're worried about computer life-span, Apple is certainly a good choice. My parents currently have an original Rev. A iMac, which will be 5 years old in August, and it's still going strong.
Apple took a shot at a small form factor Pro level machine, and it was a total bomb. There were, I know, a number of reasons for that.
I know it's been said, and rejected (though I'm not clear as to why), if you want flexibility and upgradeability, then you want a Pro level machine, and that's the Power Mac.