First let me point out that Jonathan Warner, in his interview at E3 did not commit to PVP in Anthem. Anthem is a Shared-World RPG and may or may not have PVP in it. But for the sake of discussion let's say there will be PVP. What if, instead of running around in a tiny “PVP MAP” until your eyes bug out, you would have the Wilds of Anthem. In that same interview Jonathan Warner said that enemies would also come in Exosuits. What if you could be a Marauder, out in the Wilds of Anthem exploring, fighting monsters and ambushing Freelancers when you encountered them. The “Bad Guys”, out to make a Freelancer's life a bit more difficult. There could even be a storyline.
Let me add to my speculation. The two auto cannons on the outside platform looked as if they're meant to defend against something that is flying, considering the perch their on. The Scars ambush had a heavy or a Colossus, I notice that a body was thrown out of it when destroyed, a human looking body. So, what if that flag icon is a marauder base, their Hub? What if the same rules apply to marauders, no more than four in a squad, exploration, monsters and loot are the same. You can loot them and vice versa.
There will probably be a fixed number of players in any instance. So the numbers could shift in any direction. There could be a squad and single players to create an interesting mix. There is always the guy that camps as a sniper, what if you could take him out and then put a mine there. In your gameplay you get a notification that the mine went off and one kill, he may not want to return there. There could be an Attack & Defend the Walls Platform. Attackers and defenders get XP and kills until the attackers are wiped out. One could have a field day with the different possibilities that this could present, or maybe not. My point is if there is PVP, make it different and add to the uniqueness of Anthem. Make the world dynamic in all aspects of gameplay. Your thoughts.