Monroville said:

Also, is it me or is the entrance here much smaller than the one the Falcon escapes from?

You know, here's an idea... as someone suggested a while back, there could be multiple entrances. I suggest putting the larger opening the Falcon escapes from BEHIND the Falcon in some of the scenes, indicating that this opening is a smaller one for the Taun-Taun patrol, as well as give the larger ships a larger opening to leave out of

at scene 2:08 you can see how wide the doors/opening is; should it be much bigger/wider? maybe if at the least the area on the left is pushed off and the center point of the doors closing is put much further to the left side of the screen (which would be enough to account for a larger opening that would allow the Falcon a way out). Or the door behind Chewie could be pushed to the right... anything to make the doors/ cave entrance big enough for the Falcon escape scene.

There's certainly two different entrances/exits mentioned....since we hear the Deck Officer tell Han "It's possible he came through the south entrance" and also "Sir, Commander Skywalker hasn't come in the south entrance".

Then later, at the start of Leia's orders to the pilots she says "All troop carriers will assemble at the north entrance"

This could account for the differring look of the entrance exteriors in the movie, but I'm unsure about which is which, and what one the Falcon exits from.

Are there any east and west entrances to the base too, or not, I wonder?