There is a very old, very firm rule in directing: no line readings. A line reading is when the director says the actor's lines to her in the hopes of getting the actor to mimic them. This is a huge no‐no and implies that either the director isn't skilled enough to get the performance she wants out of the actor, or that the best the actor has to offer is her ability to mimic the director. This is a limited example, but imagine if everyone on the cast and crew was limited by the best the director could do. It'd be a pretty weak show.
