But the point is the difference between "visualize" and "state a direction".
I think that "visualize" means, if not a true line of sight at least the ability to reconstruct in your mind the features of the destination spot. Under some stressing circumstances with fall damage and an immediate direct mortal threat, in a hostile environment, completely unknown and unexplored could a master opt for a check, and consequently ask for a direction, instead of granting automatically the right spell result?
