I agree. I don't see too much reason to increase damage my significant amounts per person in the party, but you could increase health by a multiple of # of people (soloing = 100% base health, 2 people = 200% base health, etc). Since healing, as i hear, has a long CD then damage should increase at huge rates, maybe 10% for each additional party (30% damage bonus for 4 people in part). seems strange to have a tank class, but the tank has to kite constantly to avoid damage.