Weapons of light isn't necessary, even if it returned in its D1 form lunafaction boots will still be significantly better, providing they don't stack. Not having to move around to refresh a buff and not having to reload is superior. However, Blessing of light is a totally different story. Having security while in my swirling circle of boss tears would be a huge buff for sentinels. Because I don't think anyone would place with worst tree for the worst subclass just to play second fiddle to warlocks who have the best neutral game tree in the game, Devour.