Quote - As for my forking the Lux code, I expect that my desired changes will be rejected by the Lux architects:

While your arguments are valid (especially the second), I think there might be some collaboration possible.
As far as I understand it, Lux is still a pretty young project which hasn't yet stabilized (explaining the lack of some basic stuff). With some polite and diplomatic negotiation they might get interested by the dark side of the force. It's their baby, and they will certainly like the idea to see it expanded and enhanced, even if it is to cater for NVIATWAS renders. Why? Because the enhancements made to adapt it for Poser will profit to the "serious" users too, adding features which are missing so far.