It would be nice if there were Private Servers that had progression just like the Adventure mode. A hot topic from what I've seen but hear me out please:
I like a good bit of the PvE ship battles, and ground battles but after awhile you start to come across players lagging all over the place becoming impossible to hit. Or you also come across the occasional players camping at Outpost just to take you out. I get it, Pirate stuff, but honestly after it happens twice at different Outpost it's a little over the line.
If private servers were to become a thing, it would be nice for progression to be the same as in Adventure but in order to keep the economy and game the same, is just have the two separate. Have people make a new pirate for Private Servers and then have a different pirate for the PvE. And never have the progression cross over.
For those Private Servers, have the skeletons, ghost ships, Krakens, Megs, etc. spawn more to mess with the players. That way they still have Pirates to mess with them.
