In theory this could be very fun. Just picture 5 holy paladins in pvp healing eachother. You would be allmost unkillable. However I fairly certain that fear and cc would turn you inside out. You could get the pvp trinket and use bubble to counter fears, but I really dont think that would cut it for this kind of play since you have to be durable.

it *might* work with some sort of "roundrobin" cleansing (each toon has another toon to cleanse) But you still have to hope that one of your char's resist the fear, and it would not work against warrior fears.