I think those extra scenes kill the pacing of The Wrath of Khan
. I remember watching the theatrical cut the first time on Blu-ray (first time I had seen the theatrical version in years) and thinking how crisp it was compared to the Director's Edition.
But, everyone has different things that they look for in a film.
Sure, to each his own. I just think that it deepens the characters of Scotty and Kirk, specifically.