woeful karma
I'm not sure if this is already in the full game, but I think it could be quite nice for each class to have buffs they can provide to other players beyond the auras. Something akin to the duelist being able to add a poison to your weapon, the paladin adding a buff your armour/shield, druid being able to cast thorns etc. there could even be stuff not directly related to combat like speed boosts, levitation, summoned items.
There could then be a chat keywords to prompt nearby classes to buff you if you're not already grouped with them. This could even be expanded into some kind of bartering where some sims ask for a small payment for a buff or give you a small gift if you buff them. Ideally these buffs would be fairly long lasting (60 mins~) to prevent it being tedious to request or refresh them.
hardy star