Currently, you can set the client.sight variable to view all objects, mobs, and turfs(no matter what). However, I'd like to see a feature that allows you to add individual objects to their sight. Say, I have an invisible arrow I want that player to be able to see. Or even perhaps a list of objects could be added at a time! Could also allow adding a path value.

Now, the easiest way(in my opinion of course) would to just perhaps set infrared frequencies which could be added and removed from your sight variable or maybe even your see_infrared variable.