Caravan Worry

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That's relatively unlikely, honestly. Caravans exist, as their explicit purpose, as a PvP objective. There won't be any "reduced PvP" version of them.

What does somewhat fit your concept, however, is Mules . Mules are a mount type that allows you to carry significantly more resources than your personal inventory can hold, but still also significantly less than a caravan. You are, however, subject to the normal flagging rules, as if you were out in the world normally. You can also take more variable routes because they do act like mounts. The game's core design is that you are never safe from PvP, but Mules are a reasonable "somewhat lower risk and lower reward" option.