> Isn't that backwards-incompatible?
This is an interactive function, I think, so backward compatibility is a loose concept here. I can add a configuration variable if you think this matters.
> similar features in other completion frameworks
I don't know if `ivy` has this, but anyway, I try to keep this kind of hotkeys to a minimum; They are easy to forget, they are not ergonomic, and I have only five fingers from birth, which doesn't help. Why would I want a hotkey when I can perfectly achieve what I need without one, and without losing any functionality?
Besides, the point is moot, as dired already exposes `dired-create-destination-dirs', so it is not delegating this feature. So it might as well do it right.