I actually like the amount of keyboard flex, although maybe it is me and my delicate typing, but I find that is almost unnoticeable. It's been a long while since I used the SP3 keyboard, so perhaps they improved the flex with the sp4 keyboard.
I like it angled, but now for reasons unknown I'm starting to like it flat.. like that I have more firmness and less noise.. and just feels better to me nowadays lol
Folded back underneath the Surface, ever since the type cover stopped working some days ago. The type cover has metamorphosed into the most expensive screen protector ever... :-\