I think you're trying to downplay or rather trivialize features and capabilities. A full OS might not be what you need but this doesn't apply to others. The Macbook Air would have made much more sense in a tablet form factor.![]()
I just think people are overestimating the real value of some of these features. They should be trivialized for the average user in my opinion. I know very few people that absolutely need Flash or the ability to connect external drives, and even less will want to connect their iPad to their HDTV. And the further from the tech world I look, the less people need things like that.
I think the idea of a simpler, easier to use consumer home computer is where we'll ultimately end up. Putting a lot of extra features in that only a tiny subset of users ever will use, just because they might, isn't the best way to design a coherent, elegant, polished system.
I'd love for my Air to be a touchscreen tablet, but I don't need or want full OSX on it. That's why I'm replacing it with an iPad. iPhone OS will do what most people need, and will do it better than a full OS on a tablet. Most of the people I know don't want a netbook. They'd only complain about it being too slow and less useful than they thought.
I've owned several tablet PCs, so I'm talking from quite a bit of personal experience.
EDIT: I guess my thoughts are that the iPad has a far larger potential market than the other tablets right now. There will be plenty of tech people that will buy the Slate or the Adam, but average consumers who might consider the iPad would never buy either of those, if they ever even hear about them. There are far, far more people that don't "need a full OS" than those who do. Every news channel and local news show will feature the lines at the Apple stores on April 3rd. You won't see that with any of the other tablets, whenever they are released. Overall, I don't think feature sets are necessarily what people will be looking at when they make their purchase decision.