“(4) "Weapons of Light": Allies that pass through Ward of Dawn are granted increased weapon damage for a short time.
This would need to be made in such a way that it doesn't stack with Well of Radiance, or reduce one of their multipliers while combined with the other so it still provides a slight advantage, but doesn't make it possible to one-phase Gahlran with a Travellers Chosen.”
I personally don’t think that’s good enough because of the need to move in and out of the bubble in order to keep the buff up as opposed to well of radiance, where you can stay stationary in the rift, get the damage buff, and don’t even need to reload because of lunafaction boots.
Maybe if the nerfed lunafactions and the damage buff from well of radiance and made your proposed weapons of light stack on top of the well damage, it would be viable. But as it stands the ease of use of Well + benefits that Lunafactions provide are too good.
Edit: I’m speaking from a strictly PvE perspective