I think you're missing the point that if Cover works all the time the Paladin's enmity doesn't matter.

Doing anything to it to enhance Paladin's offense in any way would not only move the job away from the niche SE has tried to carve out for it (it's the only job in the game that has developed in a purely defensive direction), it would push Paladin into an already oversaturated role; the offensive facetank. I'd rather see Paladin continue to evolve in a way that allows them to shine as they do in the lore; as a master of damage mitigation and protector of allies.