Turisu said:
Can you link to your source? I have never heard of any studio intervention in the theatrical cut of Aliens. Cameron had final cut on all of his movies during this period and has only subsequently stated that he now prefers the special edition to the theatrical cut. He did the same thing with T2 on which he also had final cut.
Ok, I looked it up. There was no major studio intervention (he had final cut but it had to be under 130 minutes.1), but Cameron always wanted to do a longer version ('cuse he looooves long films).
From the Special Widescreen Collector's Edition LD (1992):
The concept of a special cut or edition of a film is a new and exciting development, made possible by the specialized markets created by video. The economic realities or feature film exhibition, at least domestically, demand that a commercial film not exceed two hours. Every minute beyond that magic number carries the penalty of lost revenues. Aliens pushed the envelope with its release length of two hours and seventeen minutes, and I am grateful to 20th Century Fox for supporting the film at that running time.
Now, however, it is my pleasure to release an alternate version of the picture, one which could exist only on video because of its length. Almost twenty minutes of footage has been reinstated, footage which broadens the narrative scope and enriches the emotional impact of the film.
I felt at the time Aliens was the best possible theatrical release version of the story I set out to tell, just as I believe this special edition is the best possible version of the film in absence of time constraints. I hope you enjoy it.
I like the faster pacing of the theatrical cut, but I also like some of the scenes found in the extended cut, and can watch either with no problems.
1. [From the dvd commentary]