A mechanic where if a player or their crew as an average has a low level in their factions (say lvl 20 goldhoarder, 15 order of souls etc.), gets sunk by pvp, they receive or can pick up a bounce back mission where they have to do a certain quest to receive a direct gold and xp reward (so they don't risk losing loot again). Maybe as soon as they accept the quest they should be transfered to a different server.
Maybe the quest could be that you have to dig up 2 storage crates that are mildly stocked with fruit and regular cannonballs. This would help them have some supplies as new players don't always tend to stock up from my experience. The reward should be a quarter of what a regular voyage would bring or so. After completing the tasks the quest gives, you receive your gold and xp immediately.
this is only a suggestion, feel free to discuss.