Could there be some sort of bot detection or afk disruption where it'd be a minor inconvenience for a player, but be a disaster for a user that's botting?
Like say you have those bots that afk farm in like groupsnof 12 or so running in a circle pulling enemies and killing them with either sorc pets or the other storm ability. Make it so if it detects farming, a super version of the mob being farmed where bots would have a hard if not impossible time killing it, but a user player that's actually playing could.
And to deal with the Crafting Node bots, if it detects there, it'd teleport the user tova random area of the map and disorient the screen. Which, again, would be a minor inconvenience for an actual player, but ruin the scripts of the bot account.
That's just my thought....