That is odd with the key click. It seems like it has been added for affect. ( effect/affect, I get so confused). If so then that seems somewhat disingenuous to me. Its funny, but its the little things like that that bother me. It almost seems like poor design.
There are these 2 engineers going over the design. They get the key feel right but at the last minute some PHB steps in and says the design has changed, it needs to be noisy. The engineers look at each other, noisy?
Its too late to re-engineer the keyboard, they need to make the ship date, but we may be able to add noise as an afterthought. So they add an extra leaf, or modify the existing leaf, and eureka, let there be noise. No bother that it has nothing to do with the actual actuation of the key. Shhh..maybe no one will notice...
: )