I think there should be some way to invite people into a party and group, thus, you cannot hurt each other by accident if you're in a group. Groups can fight other groups inside of arena without hurting themselves or their teamates. Plus, it'll help in dungeons, to organize and to go with someone, and when you're at low health you wont be accidentally killed when felix throws a fireball at an orc but misses xD
half the damage no make it so u dont et hit at all by yr friends if u do put in