D is an impossibility. Maybe a better option for that would be to have better systems in place so players don't have to deal with it (ie. account wide ignore that doesn't go on the blacklist, auto reporting). This is a popular MMO and it will always have RMT.

That said:
J, O, Z (add tetramaster ... or even better make it an separate free-to-play cardgame like Hearthstone.)