8/8 FREE, PROTECTED
I was surprised that 4 players was the "Best with" above.
Please remember that if you are referring to 4 HEROES you need to vote for 5 players (heroes + overlord player). Seemed odd as in the older geeklist 5 players was ahead by a good margin, unless something changed since last time I checked.
Considering the quests seem most balanced with 3 heroes, it would seem that 4 is indeed the appropriate option.