I would like them too.
BUT, there needs to be a way to adjust their volume separate to the overall volume or media volume. Similar to Android.
I like having the sound of the onscreen keyboard, but it's way too loud.
If I turn the device volume down, then media is too soft.
I can't find a way to adjust the keyboard sound only, or the audio file to edit to reduce the volume.
I disable the sound most of the time because it's too obtrusive unless you are in a noisy environment.
It would be annoying if touch sounds were as loud as the onscreen keyboard.