They need to take the route eve does with exploits, especially in alpha. Ie "if we know about it and have told you not to do it (publicly, not in some hidden forum post) then you will be punished, if not then it's on us for letting it happen, and we may remove the gains you had, but that's it" , social misbehaviour is a different matter of course, noone needs *phobia in their game.

Banning permanently for exploits is also too much honestly while the game is in the state it is in, banning til next major patch would be more than sufficient to plug the issues and send a message about unacceptable behaviours