How would you improve the Paladin's Cover skill?

[Metricasc]

3 changes:
1) code it like guardian in PvP (aka damage taken via cover takes into the account of PLD's mits, make hallowed still incompatible with cover for balancing)
2) bring back the 20% mitigation that they had removed back in 5.0
3) increase its range by 5-10 yalms but also have a sister action that disengages cover