This is ideally what I would like Zone to be, credit to kenovo for the idea.
The main GMAP would be the /inside/ of a large ship, sort of like Skyworld, but in a smaller size. It would have all of the essentials like spar, a hat shop or two, missions, etc. The ship would actually function as a ship for the players as a whole. There would be a main hub somewhere on the ship that shows which planet the ship is docked at, and how long it will be staying there. Players can beam down and explore that planet. The GMAP would be an overworld with solid ground (i.e. not in the sky like skyworld) and there can be shops hat fit the theme of that planet. Usually the ship will stay at one planet for a real day or a few, and then all players will be warped back to the ship and the ship will have a new "beam down" location.
This gives the opportunity for many diverse planets to be explored, and there can be different cultures and types of items and whatnot. Perhaps the basing system could be 1 or 2 bases per planet, and that squad can "own" that particular planet for the time they're there. I don't know. And staff can add new planets into the mix randomly, and holiday-themed planets, too, if you want to go a bit wild... idk. Seems to be a lot of work, but it's something. Thoughts?