I was thinking like a world Invasion thing kind of like pvp in dark souls you can drop into a randoms raid, strike or patrol and kill the host for rewards, can be called like "going rogue" or something. Patrols less rewards because the host will usually be by themselves, a strike a bit more loot because they usually have two other guardians with them and a raid top tier rewards because they usually have five companions and itd be harder to kill the host.. idk just an idea i was thinking of.