Maybe most groups don't get what they want.. Some PvE players would like to have a cooperative mode to do things together without being attacked, some PvP players would want everyone in open so they have the maximum of targets, other PvP players would want consentive PvP fighting. Maybe the only ones that get what they want are the solo players..It's an interesting situation. Two camps, but one has what it wants already and the other doesn't. Saying "let's all carry on playing how we like" only satisfies one side. Normally this would be an unstable situation, but here all the power lies with FD and neither camp can affect the situation; this and only this makes the unstable situation stable, without stopping the salt generation.
Especially considering Bruce's comment, maybe the best way is a revision of the C&P system.. For instance you seal club another commander then you have to pay his rebuy and cargo/data, you get in trouble with local / galactic powers / the pilots federation, you get a bounty for other PvP players to collect, etc. I'm sure there are long threads on the subject already.
Maybe a career path for the commander that turns to the dark side. He'd have to hang out in anarchy/low sec systems (kill on sight in a high sec), he'd get missions for criminal powers, etc, etc.
All in all I think the system is working pretty well in its current form, though getting griefed in open is a bit of a turn off, and MobiusEU seems very empty. It's not very fair that someone is allowed to seal club an unengineered ship and the losing commander loses time, progress and credits, while the fully engineered commander gets the lulz with practically no consequence..
Personally I think what's really missing are a good C&P system and game mechanics to encourage PvP and PvE.