Someone
Adventurer
Make a monster charge and bash the mage, ignoring the archer that can´t make an AoO because he´s holding a bow.
Make the monsters pile up on the (only) melee fighter, because there´s an archer that doesn´t want to be in melee (that will not work with OotBI, however)
Tell the rogue´s player "No, you aren´t flanking because the archer guy doesn´t threaten anything"
Conclude that archers, while capable of feats of smackdown damage, contribute less to the group that melee fighters -unless the group is real big- and suggerst the archer´s player to make another character.
Make the monsters pile up on the (only) melee fighter, because there´s an archer that doesn´t want to be in melee (that will not work with OotBI, however)
Tell the rogue´s player "No, you aren´t flanking because the archer guy doesn´t threaten anything"
Conclude that archers, while capable of feats of smackdown damage, contribute less to the group that melee fighters -unless the group is real big- and suggerst the archer´s player to make another character.