The thing that I don't think is quite getting said/acknowledged here is that Elite Dangerous is an absurdly dense and opaque game.
Just on this one subject - that Open is (and should be) dangerous, the threat of banking should be obvious - not only requires reading the blurb when you click Open, but we've also referenced developer intent based on pre-release statements from five years ago. We've talked about Deciat being a danger hotspot. We've talked about how everything would be fine if you just had a better build. About how, oobviously, you shouldn't be in Open until you're ready to face those challenges. About how ganking is easy to avoid if you just get good at evading.
I would argue that some of those things are obvious to you only because you've been here a while. They're obvious if you know. If not? You need the forums, you need the wikis, you need the third party tools. The Deciat danger hotspot is news to me, because up until then days ago I hadn't played since pre-Engineer. As someone who has been with the Elite franchise since infancy, who has read and followed all the pre-dev stuff, and does know the gist of things, who has been casually following along in the meanwhile, the learning curve has been absurd. Even with something as seemingly simple as getting good jump range out of an AspX, there has been so much to process, and so much wading through tips and advice that are now several years out of date but persist forever in search results.
A friend of mine picked up ED a couple of days ago on the Xbox store, because it was on sale and I'd been singing it's praises. He's not experienced the game's website, and the blurb text it offers, nor the quotes we reference back to from pre-release. He doesn't know who Braben is, or any of what he has said. He knows that the game describes itself as dangerous, and that in Open PVP is on, but he's not going to know about PGs that are safe multiplayer spaces, or which systems pose a high ganking risk. Everything "obvious" in this thread won't be.
And that's the issue I have with some of the attitudes here. If most experienced people are good enough to evade a gank, then it's the inexperienced people you'll be going after. How many people does a negative experience like that drive away from Open entirely? How many people understand that if they get better at X, they'll be fine? How many people are actually going to to "git good", or to feel inclined to come back to Open, if the community attitude is "go play in Solo/PG then?"
To repeat myself from earlier, I don't think this is - or should! - be something for players to fix. I love the fact that Elite has gank evasion academies, and safe space PGs, that's very much the spirit of this game; but it's a duct tape fix, and one you need to know about to go looking for.
The "simple" fix would be to add a PVP flag, and have the game check for it when it does P2P matchmaking for instances. If your flag is on, it dumps you in the instance where gankers are lurking. If it's off, it puts you in a different instance. For the PVP crowd, it changes nothing: it's no different to you than the player being in Solo, you just don't see them. But for the PVE crowd, it adds a more convenient and intuitive safe way to get a slightly more multiplayer experience. With Odyssey coming out, especially if there are social hubs, that's something that I think would be very welcome.
Regardless of where you stand on PVP and ganking, I don't think there would be any harm in a system like this. And it doesn't require an extensive rewrite of crime and punishment or a new faction or anything like that, just a change to how the game does what it already does.