My empathy drive just got blasted with an alpha strike from an apathy weapon and is limping home in survival mode

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There have been a few suggestions recently that open should be removed, as that is where all the problems / complaints seem to originate from, I avoided posting as it seemed a little too radical even for me.
So my question to our resident games / legal experts (that's not a dig, I know a bit about the UK "sales of goods act", contract law etc but some of you know a lot more about the law and what other games companies have done previously than I ever will).
Where would FD stand legally (and morally if you wish) if they deleted open?
If they created a private group called "open" or "open PVP" alongside another one called "open PVE" I can not see an issue legally (or morally).
All of the players in open are free to rejoin the "open group" and no more arguments as there is no more open vs solo vs groups, just groups, solo & happiness.
And as an added bonus FD would likely save money on the forums storage space, with no open mode there would be a hell of a lot less posts about how solo / groups need to be fixed because they are breaking open. Cowardly, cheating, easy modes etc you know the drill.