Of all the things I am going to miss about Windows Phone, I think the single biggest is the lack of a hardware camera button. It is a small thing, but it makes such a difference for one handed operation.
Considering the amount of me-too features in phones these days, one would think that would have been recognized as an idea to borrow. If everyone can get on board with a notch, why not something that is actually useful?
End of rant.