Rotate-Around Object
Rotates the camera around an object/ship. Basically combines the "camera-rotate" and "set-camera-facing-object" sexps.
Doable, though it'll require a lot of math work to get working. What's your intended use for it? I would think that relative movement/rotation SEXPs would be more useful in most situations, although I'm open to ideas.
Camera-Waypoints
Makes the camera follow a set of waypoints with speed setting. Also should have a variable for setting the camera facing.
Evil!

I think Goober made this sound easy in one of the other threads. I'm not so sure. I can have the camera move along a set of waypoints, sure...but having it do so smoothly is another matter entirely. I'm not sure how one would actually go about accomplishing that; doing it directly requires more maths knowledge than I currently have, and doing it via FS physics (Like the AI, more or less) would require rooting around and determining what exactly the functions do, and how to make them work like I want them to. Plus it might end up requiring a separate physics loop, or defining cameras as a type of object, which isn't necessarily bad, but is more work.
So
eventually doable, if it's really worth it?
I am not trying to shove these ideas out the airlock, but I do need to be satisfied that there's a genuine use for them. I am willing to spend the time, but I want to spend it well, these two SEXPs are probably some of the most difficult that could reasonably asked for for teh camera code.
In addition, I'm pretty sure that there are other camera SEXP ideas floating around out there that deserve due consideration.