There's a bizzare mindset at work in this community. Help me out fellers, it's hurting my head.
Firstly, there is no meaningful penalty for PKers- call them anything you want, from hero to zero- there is pretty much nothing stopping an individual just shooting nine hells out of anything they meet. That is unlikely to change any time soon.
Secondly, although players can play alone, this is marketed as a multi-player experience. Some players don't like being PKed, but really like the idea of a multi-player experience. The game already supports this, as a lesser, more difficult to arrange game mode. You can play with friends, but you have to set the group up by yourself.
Thirdly, all the op is suggesting is making that mode, one that already exists and is populated by a 'tiny' community of over 20,000 players, 19k+ in one group alone, easier to enter and arrange.
What's the problem with that?
Most games have a co-op mode these days. I regularly play a popular shooter based around modern tank warfare. It's PvE mode is extremely popular, to the extent that many players avoid it's PvP mode. Funnily enough, their forum is filled with threads decrying the mode, insisting that it should be made less attractive than the PvP one. I don't understand that, either.
Some people don't want to be killed by human players. The aggressive, macho antics of our own PvPers might have something to do with that- 'it's Elite Dangerous ', 'baby turtles that stay on the beach too long get eaten', 'cowards and cheats avoid open'.
Guys, some people don't want to play that way. We're lucky they've stayed at all- there are plenty of other games out there they could be playing instead. We, this community, need players, both established and fresh. A co-op or PvE mode appeals to people, even those who like pretending to blow up enemy tanks! Why shouldn't we have one, too? If players leave open for the proposed mode, what does that tell you about what we've turned open into?