That is one of the dangers of this game and shows a little of the Looter shooter nature in its bones. When all you have are 3 man teams and you start fighting off bosses that make noise and draw a lot of attention, its not going to be long before you have people staking out the boss fights looking to gank and troll the pve'rs. At best they just come in to steal the loot. Worst case, they start sabotaging fights and trying to kill the winners once they start looting. Which isn't too hard since looting on most bosses requires you to open a menu on multiple parts of the boss's remains and that makes you sitting duck to get shot. Synduality I mentioned before had to just make a pure PvE map for boss fights. Its pure coop and pvp damage is turned off. Looting is still a first come first serve, but it at least stops the bloodbath that would happen normally.
The other issue is people are starting to have 'finished' the game. Some are grinding out the Expedition stuff, but as people finish their quests, fully expanded their stash, and gotten most the readily available blueprints the 'Well, what else is there to do?" question starts to arise. And for more than a few its pvp and trolling other players. Solo sorties for the last few days has been refreshing, lots of cooperation. Big groups of people fighting the leapers and using defibs to try and save people. However, since the weekend ended I am seeing more and more solo sortie pvp ambushes. I hope it doesn't become too prevalent because the organic nature of just shooting the shit with randos while gunning down robots has been fun, but Embark is going to need to keep pve content flowing or people will start making content of each other and the game will become significantly less friendly which would be a shame.
Watched the end of Shrouds last stream. Exactly what you said. He has all items, stash is loaded with all the best gear, full of purple shields, all quests done (only like 60ish, most give "useless" rewards as he states). The last two raids were queen which I think is the "hardest" Arc boss in the game currently.
First raid - They pulled, killed queen fairly easily. Team of 3, all had wolf grenades and the gun that does massive damage to Arcs. Once killed, they were swarmed by 3, perhaps 4 teams of 3. Fought and killed all of them. They even waited until past 18 minutes to do the final pull and kill.
Second raid - "Lets go in and kill people fighting the boss" was the plan. They found the queen, waited until it was nearly dead while others fought it. "Helped" in the last minute as it exploded, killed team who went to loot it, looted the queen and left.
Though he said the parts are useless because the legendary guns it creates are not good. They're just filling up my inventory! (they don't stack either).
So game is finished for the people who have no lifed it, they kill for fun and the ones they fight are (unless geared) fodder compared to the best/purple loadouts. Itemization is not in place for keeping up grinding either. And while you can do that quest to "end" your character, why? For some cosmetics? You get no new skills or items, so it's basically just doing a new run towards the end game where Arcs drop items to craft weapons worse than the ones you used to kill them (weapons are "better" but not in terms of power compared to investment).
Just do runs with worse gear, and it'll be the same as if you did the event to end your character. It's not like a wipe where everyone is on the same level, you're only "gimping" yourself, so no real difference than having your own challenges like "oh I am going to start runs with no gear and see what I can do!"
Game is already a massive success, but I think they'll need to add more stuff, and quick, to get longevity. Which Shroud at least was somewhat skeptical about since he said that while playing the Tech test 2 (test around 5 months ago) it was said (not by devs but community) that it was around 35-40% of the game. So there would be "much" more. Now it was apparent that it featured like 80+% of the full game. So not much content at all has been added since then. So dev speed doesn't seem fast.