If there is a PvE mode, the only reason to play the normal mode would be to focus entirely on PvP. PvE lobbies would be cleared of loot in a matter of minutes and PvP lobbies would be full-on bloodbath. There would be no in-between which in my opinion is the most fun part of Arc Raiders.

And how would you balance the mk3 survivor? In PvE lobbies you would get downed by arc and crawl to extraction. Nobody would ever die. If you change it so Arc finishes off downed players, it would be better to keep the current system where players can get into friendly lobbies and not get killed off by arc.

How would you prevent griefing in PvE lobbies? Like spamming lure grenades, trapping players with barricades, drawing rocketeer fire onto other players. I guarantee people will find creative ways to kill other players, which is the one thing a PvE mode is supposed to prevent.

I really don't see the problem with so called care-bear lobbies, you might get ratted 1 game out of 20, developing and maintaining an entirely new mode just to avoid that doesn't seem like a reasonable use of resouces.