Having emissive materials in Photolux like Keyshot would be very helpful for simulating lit objects. Currently, this is approximated by placing a light inside a transparent part, but the results are terrible. The light location is hard to place and the size is fixed. If I want to simulate a lit LED headlight or turn signal it doesn't work. Even a simple flashlight looks bad.
I realize Creo isn't a photometric simulator, but much of the physics is already in there. Just create a user interface to let us use it. Keyshot does an excellent job of simulating in-scene lighting. If you could add a few of those features, I'd be happy.