The implication that open means youre into pvp or must want to do pvp is a false one. All open means is that there's areas that are more dangerous and ship build choices matter even more.
Not quite right. It would be correct if there were strong enough consequences to PvP in some areas that it would keep those away that enjoys PvP whether it is one-sided or not. However, our crime and punishment system is still not quite up to a standard where PvP would be as completely discouraged as possible in high security areas.
Essentially we have watered down the cost of death in this game to the point where suicide ramming can be done for fun and with near zero consequence. Until we have systems in place where some systems are very hard to access if there are bad enough blemishes on a commanders record, we don't have a good case for Open Only. That is achievable, though, as we can see with the beginners' systems.
It could "simply" be that any law breakers would be permitted in (after a warning), and then hounded constantly by Advanced Interceptors (I suggest matte-black Viper Mk Vs looking suspiciously like 1972 Holden Monaros) that always win interdiction and are basically Station Cannons with engines.
Either way, I'm all for Open Only if there's enough teeth to C&P to deter gankers away from high security systems.