OK, that must be an enhancement in a verson later than 4.3.8, because Ctrl-clicking does nothing for me with 4.3.8. In any case, I'd still find it useful to have the option of automatically zooming in (at the current zoom level) on the focus point, so you wouldn't have to touch the mouse and the Ctrl/Cmd key (at least where no recomposing was going on) to reach the part of the image you want to be in focus.
Mike