Most people the idea but I think it can work. Second people want to see a support class so we can focus them toward this task.

DoL - Find special items to use in combat like; Grenades, Red Fang, Arctic Wind, etc.. The would also unearth Diadem specific Hidden Maps and treasure coffers.

DoH - they would craft items to help the party like cannons, AoE splash potions, and so on. The would also create campsites (tents) the would buff players who enter, increase treasure coffer drop rate, spirit bonding, etc...

Obviously this is ruff idea but you can see the potential of adding them to the group as long as they can contribute to the group instead of being a hindrance.