There are no more cosmetics I'm interested in purchasing. I'm almost rank 30 with all factions and the quests are now boring as hell. I still enjoy the combat, but I'm betting most of you don't want me to dedicate my 30+ hours a week in-game to blowing you out of the water. There is no reason for me to get treasure. None. Just sinking and slaughtering everyone is my enjoyment and reason for playing.
I won't stop having fun because it upsets some people. There is no compromise. It's up to the developers to give me a reason to stop killing everyone on sight. If there were a reason for me to hunt treasure, I would.
I love the world of SoT. It's beautiful, immersive, engaging, and complex enough to be trying at times, but still fun overall. The mechanics and base game are great. The quests get boring rapidly. Adding more variety in the quests, NPCs, and treasure hunting would be great, but it won't solve the gameplay loop. Eventually you will be able to buy everything.
There are various ways to solve this. Gold sinks are one way to do it. Buying consumables is another. Developers constantly releasing new cosmetics is a third possibility. I mentioned my personal idea earlier. Be it through loss and regain or acquiring new stuff they all boil down to some form of progression.
I'm fine with horizontal progression. I love that only skill divides the winner and the loser. Give me some damn horizontal progression then. Cosmetics earned through PvP. Ship cabin decorations or trophies. Changing the cargo models in the hull based on how many of which items you've turned in during the session. Unique hats or peg legs that drop when you die for the victor to pick up. Rare, you gave us the tools, now give us the content to play with using those tools.
TL:DR No longevity. Broken gameplay loop. All that's left is PvP. Needs content / progression. Gave suggestions.
