Yeah that's why MS fit a core processor AND a kickstand in a tablet that is only slightly thicker than an ipad air (.07" difference, that's nuts IMO).
Landscape only, so what? I don't disagree that a portrait mode kickstand would be nice, but other tablets don't even have ANY option for a kickstand. What solutions have you seen in terms of even cases which have portrait solutions?
Protective cases, it's a good point for some, but I hate protective cases personally. I always put on a skin for the back of the tablet and just a cover and I'm all set, keeps my tablet nice and thin the way it was meant to be.
Kickstand wear, the laws of physics say you are right. But in terms of longevity does it matter? There aren't any reports of the SP2 or SP1 kickstand failing after a couple of years of them being out, for example. Maybe 10 years down the road? Or then again maybe not, we can revisit in 8 years.
The need to prop up a tablet is pretty universal. I challenge anyone to honestly say they NEVER have a need to prop up their tablet. Non stock solutions are pretty poor overall, bulky cases, foldback covers which lose rigidity over time and are not very stable to begin with, etc etc.