i am thinking in modeling very simple low poly geometry objects for light sources. you would then have a runtime folder called lights and you could load them inside the poser scene. every material would be set to ambient.the objects would also be UV mapped so that simple textures could be added.

the more faces the object has the longer it renders as a light source.

this has 24 faces. so 24 small area lights. i would use this when you dont see the ''spotlight''

this has 96 faces. so a lot of area lights. i would use this for a close up or when the light is in camera.