I used to play Legend of Mir, and the GMs would run events some evenings by randomly spawning mobs and allowing like 20+ people all to play together and kill them. These mobs would be harder than usual, and would drop good gold or special items.
I feel the 5 people limit in a game also needs to be changed. Make mobs harder in fang, but allow larger groups to work together to kill them.
Just some ideas
