I would be surprised if a developer has actually looked at Divine Veil since Heavensward and actually asked themselves how it fits in with tank balance and other raidwide mitigation tools. There's like four of them, so they probably haven't the time.

There's no reason why Divine Veil should be inferior to Shake it Off. Passage of Arms is a dps loss when there's a targetable mob up. If you're feeling threatened by PLD having access to both, perhaps have Veil cost gauge. Problem solved.

On a tangent, if you have healers who don't think that revising LD is a top priority on DRK, you definitely need to find new healers to play with. They're the ones who pay the resource costs at the end of the day.