On the Objects panel, there's a button called "Perform an action." It has several options to turn bounding boxes on/off, etc. How about a "Turn Objects/Populations On/Off"?
There are many times when working a scene, where I have a lot of objects, but wish to simple "tune" the terrain and do a high quality render without the objects/populations generation and rendering. A simple on/off option would be nice (I can do it using a text editor script, but then the scene has to be reloaded each time an on or off is made.)
Or maybe there's an easier way to do this?