Just a fun little addon I threw together the last couple days, based on an idea that came up long ago when AQ20 first came out and we were learning Ossirian. What it does is display a big red arrow pointing in the direction of the last ping, to show you which direction it is. Note that your camera has to be positioned directly behind your character for the direction to be correct (since I can't get information about the camera angle as far as I know).
Added ability to use /pingdir xx,yy to ping towards outdoor coordinates, for when you're given a location and want to see the big red arrow pointing towards it
Having another look at the camera functions earlier today trying to see if there was anything that could be useful to program in smooth camera moves for filming in the game (besides FlipCameraYaw()), I found out you can use SaveView() and then use GetCVar() to retrieve the saved camera pitch, yaw, and distance.
One of the things that bugged me the most when I first wrote this addon was that your camera had to be directly behind the player for the arrow to be pointing in the right direction. No longer! Version 0.0.5 can now point the arrow in the proper direction relative to your camera position, though this is optional as it will eat up one of your camera preset slots in the process.
Alas, using SetCVar() and then SetView() does not seem to work, so no luck trying to program in camera moves that way /cry.
I just wanted to chime in that this is a great AddOn, and the new camera compensation makes it even better. It is so helpful while questing and grouping, and the "gps" arrow combined with coordinates from websites makes finding stuff a breeze. Thanks for updating this, it's a really clever idea and I think it should be in the default UI!