They should keep the shrouded ghost as it is until the game ends.
The only reason people care is because it's rare, the only reason people push to make it less rare is because they feel they are owed for time played, and because it's one of the few things in this game they couldn't cheese as a reg.
Let one thing in SoT stay good and significant till the end.
What a lot of people don't get in SoT is that making the box of secrets and the shrouded ghost irrelevant is just people robbing themselves of what could be.
Nobody really cares if anyone posts a screenshot of a box of secrets now, everyone knows they are handed out like halloween candy and some of them are through voyage exploits along the way.
It would be no different with the shrouded ghost. People are robbing themselves of real and organic thrill just so they can pretend something matters for status between a clique of sot regs.
Let things stay real in SoT. Too late for most things, but not too late for the shrouded ghost.
People should have the freedom to ruin their own experience, they should not have the power to take organic experiences away from everyone else to do it.