Saw the theatrical cut of Aliens again recently and boy did I miss all the SE scenes. After years of watching the SE the theatrical's pacing seemed so rushed.
I love the extended cut like so many, there was so much it added to the movie - especially with the scenes of the colony before the infestation, Newt's family, Ripley's back story with her daughter and even something simple like Hicks and Ripley exchanging first names. I will watch the theatrical release but its hard to because it is rushed like you said because of those scenes being removed.