How would you improve the Paladin's Cover skill?

[Sqwall]

Except cooldowns do mitigate incoming damage transferred from using Cover, the only action that does not interact with Cover is Hallowed Ground which never interacted with it directly. Indirectly on double busters it used to be possible, by using mitigation and Hallowed maybe because tank went down and tank buster would go on a DPS or Healer, or other tank ran out of cooldowns. But nowadays, most tank busters apply a bleed or magic/ physical vuln that makes that a pointless exercise, now you might as well just sacrifice yourself and save Hallowed for a more appropriate point in a fight.

While it would be nice to get that mitigation back, personally I rather remove the gauge cost first before any other adjustments are made, as long as it shares a resource with Holy Sheltron and Intervention, it's not worth using.

It actually did work ....back in the ARR days. It was a coding oversight. Hallowed Ground did work with cover.

It was patched shortly after it was found.