I haven't played the base game in awhile, but I think there's one more big map section after the snow area. I think the map after the snow area is the big ass tree area with the city and that part is pretty sweet. Everybody complains about the Melania boss but the area leading up to it is super fun and it's probably the most fun place to invade people because there's a lot of verticality to sneak up on people. I think you will be fine to do the DLC if you are that far. 🤷🏻‍♂️