I would love to see this happen in game with guardians being either for the light, or for the darkness.
It would be amazing to see the two factions go head to head in PVP just for bragging rights, etc.
And it wouldn't take away from the guardians supers, or equipment. Just their personal alignment with light or dark.
I think it would be a lot of fun to do. It won't happen, but it'd be cool to see a few guardians repping a fallen sign on their cloak/robe/butt cloth.