The problem is that Night Elves do not worship the Light, at all. They worship Elune and only Elune, except for a few rare exceptions.

Well, I find it fascinating from the perspective of the possibility which indicates that the Night Elves worship Elune wrongly. I imagine a High Priestess of Elune might not like to learn that Elune might be a servant of the Light.

Of course I don't know much of what sort of canonical lore exists about Elune to begin with, so i don't know if anything is out there which contradicts this theory.

I'm intrigued because the system existing thus far seems to be very contradictory and this could indicate Blizz establishing a cohesive system.

Since my Nelf mage is a Light follower (as are all my toons), I imagine this gives him another reason to be exiled (my original concept was exiled because he was a secret mage before the Cataclysm. Now he can be a heretic too)

There's also the other side of the idea to consider.

That the Draenei are imposing their particular metaphysical filter on everyone else, like some sort of creepy Light missionaries.

A big glowing thing, illuminating everything around it that bestows the gift of the light on all it's followers? Of course it's one of the Naaru!

Or it might just be a lighthouse. Or the Sun. Or an unusually shiny penny. Or Elune, goddess of the Nelves.

@Murdertime: I'm having my Paladin's Light powers come from a super shiny penny from now on.