The gameplay of an MMORPG is easier to design in a way so that its harder to automate; at least with todays state of computer science and in a way that gains an advantage over other players (unlike FPS like Quake). However most MMORPGs are designed to have grinding for advantages which is usually easily automated. I would be interested in how such an MMORPG would play like. Perhaps that would even make the game more enjoyable.