In Wizardry, you can send party members off on missions and they can come back with gold, items etc. They are greyed out when on a mission and on a timer, they return in 3-5 hours, difficulty increases reward and risk.

Adventuring Fellow could be used this way if max level, you could even assign trusts to them on their mission. You partake in these missions from the NPC companion meeting point, and collect reward there too.

They could come back after 4-5 hours, with gil, specific items you wanted to farm, XP, Mlevl, Capacity points, even potentially currency from content like Sortie or something.

You could do it once per day, and it's a cool thing to login to and pickup.