LDStructure, developed by Michael Heidemann, is a tool for analyzing ldraw parts library. With LDStructure you will get a tool that tells you which parts are required to show the current part and where the current part is used in. You will get this information within a second or even quicker. So this tool is a "needs to have" if you are working on parts for the ldraw part library.
Even in terms of play value it mostly seems to be a trade-off — 60104 loses the vending machine, cafe, baggage x-ray scanner, and a few seats on the plane but gains a baggage conveyor, a restroom, a refueling tank for the plane, an additional minifigure, and more seats in the waiting area. It's pretty nice to see the value of a LEGO air terminal remain fairly stable even though the price has not increased.
Stickers are used for decorations for the outside of the plane. I like how the stickers for the outside match colours with the piping on the plane. I found the sticker for the top of the door to be a little big; if you line up the orange on the bottom of the stickers with the orange on the plane the sticker overlaps a bit at the top. The stickers for the nose of the plane are not as difficult to apply as I thought they would be. They do seem a bit superfluous, though they do make the plane look nice. The plane is finished with the tail fin, that uses yet more stickers. It is interesting that this plane actually uses more stickers than the Friends plane does.

Agent 13 has a pretty plain appearance, with caramel-coloured wavy hair, and a black, spy-like top. Her torso has some nice details, with sharp, angular lines that all combine to form a rough outline of an upside down star. She has plain sand blue pants and rocks a sub-machine gun accessory. I like regular LEGO firearms, so it’s very nice to get one in this set as they’re fairly uncommon.