Actually, as the CS's use the ingame engine they are very easy to create. You set up a simple script telling NPC's where to go and what to do, as well as where the "camera" should be located. The scripting for text is easy too..
Ahh, [%player_first_name%], thank [%players_diety%] you came here!
In an ideal world, SE would have a programme like Unreal's kismet so creating CS's is as easy as filling in bits here and there, nothing difficult, nothing expensive, all the assets already exist.
