yes, yes, yes
1: the keyboard position on your lap would not be different between this and a netbook/notebook, so I'll cimply dismiss this point you failed to make.
2: the sleve for it, which is a real nice way to carry and protect it, not to mention the ergonomics it adds to it, can acutally give you an even better keyboard position than a notebook, and, the keyboard being dynamic means it is by FAR the best system for working in spreadsheets, charts, and presentations...
3: Eye Strain? Have you really tried to read an ebook in the dark using it's backlight? I borrowed a kindle for a few nights from a friend, tried to read in bed. Very glad I did not waste $300... I read from my nice MacBook Pro IPS panel all day long with no issues, including at night in bed for hours straight, and I also have no issues at all outside in direct sunlight. Maybe you should actually TRY it in these scenarios before you compare it to something else you also likely don;t own and have not tried. The ONLY advantage to e-ink I have ever experienced was long battery life (and only while not using a back light, which will kill the batteries in 6 hours or so).
4: Really, you already have a system for connecting a PC conveniently to your TV to stream movies to it? Good for you. The 98% of the restu of us who've been considdering an Apple TV, hassling over cabling up a notebook properly (including power), or looking at other set top options think the iPad is the perfect option to solve this.
5: the living room if NOT the only place I watch video. hanging an iPad behind the car seat for the kids to watch would save me over $800 equipping the car with a video system that's half that good. Car DVD players with 10" screens at 480i resolutions may be cheaper, but they're DVD based, and that's a pain for kids that can't reach the player to change disks... Also, at the beach/pool, on vacation, in a hotel, and on top of all this and an e-reader, it also plays some damn nice 3D games?
6: You underestimate the value of portrait view for both websites and photo management.
7: USB and SD adapters are already advertized, $29 for both. Yea, probably should have been built in, but the form factor would have to change to even include micro-USB, let alone SD. And really, beyong 32GB I can't think of anything I;d need on the device I could not stream over wifi or 3G. (free software already makes this possible on an iPhone).
It;s not going to fail. It;s going to be a huge success, likely selling 3-4 million devices by years end, and then a newer more powerful model next year WITH SD and a camer integrated will be the same price next year.
Keep in mind, Apple can't make the PERFECT device the first time. There's a demand curve that has to be handled as manufacturing ramps up performance. They're not making 30 million A4 chips this year, NO ONE has the fab to handle that today. Its market strategy. 2-3 million people will buy one regardless in the USA alone. Give them just enough, and bring out a better one next year, and a better one a year after that, and they'll sell 20 million in the US in 2.5 years.