Basically, this idea encourages players to work in parties with strangers more often, as I’ve found that moments of cooperation in games tends to make said game a lot more fun.
This system allows players who make a party to display a tag above their heads indicating what they’re looking to do, acting as an invitation for other players to join in. It also grants a few minor bonuses for working together in a party, making group activities a good way to accumulate loot.