So knowing full well it would reduce the depth/complexity, how about each character just prioritizes Care, Fairness and Loyalty from most to least important. Should be quick and easy for most players to get their heads around and get on with the game.
I think Sanctity wouldn't really translate well into something like D&D, though Loyalty to the group and Respect for authority could be split into their own separate values (but as noted i'm a sucker for the rule of 3's).