In what way would this possibly benefit the game?
Mobius already gives you exactly the experience you are asking for, so if you want open without PvP, play there.
Not everyone who likes PvP is a soulless murderer you know.
Some, myself included, enjoy PvP but don't want to ruin the day of anyone who doesn't, so we go hang around where we know we'll be attacked and get our PvP kicks that way.
Others aren't really PvPers, but enjoy the challenge of escaping a PvPer.
And then there are the people who love PvP and look for it anywhere they can. Guess what, just because they interdicted you and blew you up doesn't make them evil griefers. Most of them are really nice people who just enjoy pitting their skills and ship build against those of another human player. Yeah, sure they interdicted you, because they probably assumed that if you are in open instead of Mobius or solo, you are implicitly consenting to the possibility of PvP.
There may be a few who hang around starter systems blasting away newb sidewinders with an Anaconda (although I spent my first 3 weeks playing around 6 hours a day in and around my starter system in open and never saw any sign of them), but they are a tiny minority.
So what would this do for the game? I mean apart from driving away a sizeable portion of the playerbase and reducing the game's long term viability due to reduced funding.