The scaling factors for lights and cameras do not operate in the same method as the scaling for physical objects -- and are NOT saved in the pz3 or lt2 file. Those have to be manually hacked. Also, a scaled scene often requires a different lighting and camera set up. Since many of the sets I make require me to operate with camera bounds of 300 or more on the dollies, I've learned this the hard way! So scaling the lights and cameras isnt what needs to be done so much as moving them out in a spherical pattern formt he origin point -- which would not work for items located at the origin point. (say, for example, you had a nice little 5 point lightset around the scene, but a candle with a dual 180 spot set on it within the scene. moving them all out while the scene is scaled up would pretty much wreck the lighting of the candle) So, in my opinion, a controllable scaling script for only the objects in a scene -- ideally without resorting to parenting everything so that you could maintain individual item zero points -- would be awesome. Otherwise it would just be a matter of parenting everything to a single item and then scaling it all up at once, which is what is done already. Script like that would be useful.

thou and I, my friend, can, in the most flunkey world, make, each of us, one non-flunkey, one hero, if we like: that will be two heroes to begin with. (Carlyle)