Quote - As for the improved Luxrender you're thinking of, I hope that there will be a way to merge your additions back into the main stream at some point, since I'm assuming there will be further development on that.

That shouldn't be troublesome, Lux is GPL, so the only two criteria are

1. the additional code can be GPL'd (not much can be done if it can't)
2. the Lux project decide to include it (could be distributed as a patch provided 1) is fulfilled)