Yeah, just you.
Colonists part wasn't strictly necessary, but it was good scene-setting. We got to see a base which *wasn't* just bullet-scarred dark tunnels, which made how it looked when the marines got there more significant.
More time with Ripley after she's revived, adjusting to a world where her daughter has grown old and died without her, and where everything she knows (she's a pilot and a techie, remember?) is obsolete.
The automatic guns scene worked for me. Always wondered why the aliens didn't just come in the front door. Now I know.
Significantly extended final battle with the alien queen. The part where the two break apart and circle round each other looking for weaknesses is superb. It shows the alien *is* smart, not just a shark with legs. And that makes it a duel, not just a brawl.
More chat with the marines and Ripley, hence more character. The marines had a lot of shooting and dying to do, but precious little character. Even the most vocal ones (Hicks, Hudson, Vasquez) were fairly 2D.
Newt isn't just an annoying little kid, she's clearly traumatised *and* she's a survivor with important intel for the marines. She gets more to do than just run away and scream. And she's important for Ripley, who's only recently "lost" her actual daughter.
And Bishop gets more time too. The original didn't make much out of Bishop's android-ness. The extended version does.
So yeah, fraid it's probably you. ;)