First of all, what's wrong with having a standardized mount size? I like knowing that I can fit my camera onto any standard mount I want to buy without issue. The quick-release and plastic body concerns are a non-issue for me because most tripod manufacturers have fixed this by simply putting a quick-release plate on the tripod that has a rubber surface. Voila- when I am in the mode of taking mounted photos, I screw the plate on, and just leave it. Then I can quickly mount and unmount the camera as-needed. Sure, this might not pass the "smack the lens and there shouldn't be a single iota of movement test", but that's a very narrow use-case, as opposed to not having to spend hundreds of dollars on a more expensive camera whose manufacturer invested hundreds of thousands of man-hours to develop and test.
As for the remote, that also seemed to be a pretty narrow use case. I have a standard infrared remote I use when taking mounted photos, and it works fine 99% of the time. I don't like the Bluetooth idea for a few reasons. One, you have to toggle it on and off if you want to conserve camera battery. Two, you have to have a Bluetooth enabled device capable of controlling the camera (read, smartphone) which introduces a potential failure point because now you have to make sure you have two things charged (your phone and your camera) because remote batteries can last for years. You want to take pictures with your steering wheel? Sounds cool, but is that a use-case Sony should invest heavily to satisfy?
To me, the innovation in the camera market has been phenomenal. The speed at which cameras can autofocus and burst shoot, as well as the battery life have all improved while the prices have continued to drop. The one thing I think could definitely be improved (as a Sony Alpha user) is the software interface, which took me a solid month of study to master and is still cumbersome to use on a daily basis. But, the complexity of photography and understanding all of the variables involved is one of the most appealing parts to me.