Misison: Rescue the Hostages. No, I mean REALLY Rescue the Hostages!

You've just run hither and yon through yet another nondescript office building. You've beaten up another pair of villains who had a hostage cornered. The hostage thanks you and scampers off into the building which we've already determined is crawling with evil-doers.

What the hell is up with that?

That's not rescuing hostages. It borders on irresposibility. How can you let them run off like that, perhaps only to find more danger? It's doing a superficial job. Time for another added touch of realism. When it comes to hostage rescue missions, suppose after each hostage is "freed," he follows you on through the building as you free the others. Then once you have them all, you have a choice... You can either click the "end mission" button and go on your merry way as usual. Or, for bonus experience, you can then wend your way back out of the building with the hostages in tow. Once outside, the hostages are to be escorted to "safety" ...perhaps to a police drone, or to a policeman stationed on random convenient corners throughout the city. During some story arcs, the hostage could still be highly sought by the villains, causing ambushes to spawn on the way. When an ambush appears, the hostage is once again considered "cornered" until they're defeated.

Now that's hostage rescuing.

In a similar vein, this kind of thing opens up potential for new missions, escorting people from place to place. The person could run along behind you (the hero) from place to place, or you could be assigned to escort a person in a car as it drives from one location to another.