"Most of the Mac OS" is not emulated. Very little emulated code remains, and that's been the case for quite a while. Your talk about the Mac being a "single-application paradigm" is a cheap shot; you've been able to move between Mac processes easily for a long time. The only thing that remains is the Mac's primitive memory-management and its multitasking model which can cause some real slowdowns in background apps. But it's hardly fair to liken the modern Mac OS to a system that runs only one app. Have you seen a Mac since 1988?
Then, in the next breath, you applaud OS X Server. Guess what? Mac OS X is based on the same core as OS X Server. It's got Darwin underneath, meaning it's basically BSD under there. It's got protected memory, good multitasking, and backward Mac app compatibility that doesn't sacrifice all the new features. Mac OS X is, despite the name, a completely new Mac OS built atop a UNIX core. It will even have a command line, if you want to get it.
As for the interface, I think it's much ado about nothing. In the end, OS X's interface will be an advance from the current Mac 'face, but it's not going to be that radical. If you think the current Mac interface is cool, you'll like OS X. If you don't, well, you still won't.
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Then, in the next breath, you applaud OS X Server. Guess what? Mac OS X is based on the same core as OS X Server. It's got Darwin underneath, meaning it's basically BSD under there. It's got protected memory, good multitasking, and backward Mac app compatibility that doesn't sacrifice all the new features. Mac OS X is, despite the name, a completely new Mac OS built atop a UNIX core. It will even have a command line, if you want to get it.
As for the interface, I think it's much ado about nothing. In the end, OS X's interface will be an advance from the current Mac 'face, but it's not going to be that radical. If you think the current Mac interface is cool, you'll like OS X. If you don't, well, you still won't.