How about 5 boxing ? I forgot if vanilla has group xp bonus ? what is the exact formula for xp ? when grouping in the world (not in instance) are you getting 1/5th of the xp per character per kill ? you don't really go 5x faster (specially if you have a tank and a healer) so curious if it'll be a lot slower (also the aggravation of some collect drop rng quests)