Wow! I love looking at this thread grow. I've always kind of been leaning toward a need to separate the saves, but I'm kinda not feeling that so much anymore. There are good arguments supporting keeping it, and frankly we have no number data to compare and contrast anything.
At the end of the day the OPEN, GROUP, SOLO only really impacts a few players :
Players who want to be Pirates and NPC marks just don't cut it
Bounty Hunters who want those big scores on Pirates where they can't hide
Guns for Hire in Combat Zones who want to fight humans rather than NPCs
Meta Gamers who are convinced that they can be undermined without being able to defend (which I don't think happens)
Player Killers (I don't think they get a say either way as they break the spirit of the game)
Everyone else, (I'm in this group) is fine just switching back on forth. This forum is a pretty tiny sample of the player base. Is there a way to see how many different names contributed?
I don't think the PvP and PvE terms that everyone is so fond of throwing around work with Elite either. There is one game world and it has rules. The same rules apply to NPC and Players. You commit a crime and you have a bounty, then you're someones payday. Elite doesn't care if you are an NPC or a player collecting or receiving a bounty. If you are a trader, the Elite doesn't care if you are interdicted by a NPC or a Player. Elite won't call the whambulance to save you. There is only one player vs ... and that's Player vs Elite. Luckily the modes are a filter that mitigate the danger somewhat (but the NPC's are getting better). But if you travel in OPEN, you are fair game just like every other ship. I've always just looked at those hollow markers as chaotic and devious AI that give the game spice. When I enter a system with a hollow marker, I keep my guard up and my eyes on their ship and radar. One weird move, and I'm out. I suck at fighting, but I do like the excitement of escaping.
OPEN or SOLO, NPC or Player, its just PvElite and it's a dangerous galaxy.