I think that if some of the older models for the major islands were combined with the newer ones, we'd have much more area to explore. This is beneficial as it maintains an MMO's standard of being large as well as somewhat realistically depicting the islands of the Caribbean.

And since this is the Caribbean I think having multiple wild islands apart from Outcast Isle would be of some benefit, even if they're as small as sandspits. Having an area where ships can be anchored and boarded for taking out (as complex as that might be to implement) is another way of expanding the experience.

Since this game relies on implementing models from the original game, perhaps some can be imported from other PotC games (i.e) Shipwreck Cove or Isla Cruces from the PotC: AWE game.

I have no idea how feasible any of this is, but I just thought I'd post some of my suggestions here.

EDIT: Ignore that I used the adjective "easy" in the title.