Okay, I was a longtime Lux player before I moved to Ahri and absolutely love the new VOs minus her new pick one. I get the old one references summoner and you want to keep the light puns, but is there any possibility of changing it to something like "A bright decision" or maybe even "A brilliant decision"?
It was one of the things I adored whenever I picked her, that go at them attitude. "Let's light it up" makes me think more like shooting guns due to how many FPS games use the term.
Just a suggestion. New quote isn't bad as it is yet I think it could be slightly better.