I know there's going to be people rolling their eyes by just seeing the title, but stick with me for a sec....
Let's take Fortnite for example... the entire core element of gameplay for Fortnite Battle Royale was building forts. Then, a few years ago, a new season came out and they got rid of the building aspect (for the story of the season) and then brought it back, but people loved the no builds mode so much that they made it permanent.
As it stands now, there's a pretty big rift between people that just want to PvE vs the PvP crowd. So why can't Embark just make a PvE only mode? Because there's plenty of people like me, who enjoy PvP, and would still engage in the normal PvEvP mode, but I way more enjoy PvE and get plenty of stress and tension from the Arc as is, but most importantly, and what I think one of the main things that Embark and the, "JuSt GiT gOoD aNd StOp wHiNiNg" crowd isn't considering is, I don't want to kill another player if all they're trying to do is grind thru a trial or accomplish something game specific, because that's happened to ME too many times and I know how much it sucks. Like, "Dude, I'm just trying to get food for my chicken." I'm a nice guy in real life, so I have no desire to be an asshole in the virtual space. And I don't know if it's because the state of the world is as it is, especially in the U.S. where I'm from, but it legit just bums me out to be ratted on more than it pisses me off. Because people CHOOSE to kill other players in this game, you don't HAVE to do it. So, for someone like me, who doesn't want to rain on anyone else's parade, I will never shoot first, because I'm just out there trying to "treat others as I want to be treated". Running into a total stranger and them being cool and you end up helping each other out is pretty awesome. But like I said, I don't mind PvP, but 9.9 times out of 10, I've been killed by a rat douchebag, not someone engaging in a full-on gunfight. And no, I'm not expecting everyone to meet out in the street at high noon and have a shootout, but when I play other games LIKE Fortnite, I know what I'm in for. There's another player, shoot on sight. The whole point of other shooters is to win the shootout. I do not enjoy the PvEvP aspect whatsoever because I'm there for PvE and when I go 10 games without running into anyone other than super cool/fun/chill raiders that are there for the same reasons, that 11th game where you run into an asshole who's only killing you because some people just love shitting on other people's good time, it's just jarring and borderline enough to make me want to stop playing. (And let's be real, most PvP'rs that are in friendly lobbies are only there because they've taken advantage of the ABBM, which I think works very well.) And with this new Riven Tides update, where it seems Embark is purposely making PvE'rs lives worse, closing down the game and walking away is becoming more of a reality, which sucks, because I love the game. And I've had a handful of friends that I have tried to bring over to the game and they don't much like PvP games and have SAID, "If they had a mode where you could just PvE, I would be all about it."
Adding a PvE only mode doesn't take anything away from anyone at all. The PvP crowd can still shoot on sight, the PvPvE crowd can still play exactly how they want to play, except for the fact that a PvE only mode would eliminate the friendly, easy pickings that the rat douchebags depend on. The only thing a PvE only mode will do is give more people more options to play how they want to play. Just rachet up the Arc threat a bit more in the PvE only mode to balance out the removal of the human element threat and there you have it. More play options = more players, it's that simple.
And now that the honeymoon phase is over for Arc Raiders and the player count is dropping, some of those people that have left may be people who just got tired of being shit on by other players. A PvE only mode might be a way to bring most of those people back and keep them there. Just a thought.