Banning all bots would be the easiest thing in the world. It takes 2 hours a day to make botting non-profitible.
-teleport to all starting zone pre-boost leveling routes and noclip around while invisible
-/who the Chinese botting guilds my server has had since launch and eliminate them
-/who every botted dungeon and investigate suspicious players
-teleport to each and every player in the high level herbing zones where there are never more than 20 players per faction. Use an add-on like friendinfo to add tags in the /who list to obvious non-bots.
-back to the starting zone to cleanup the new accounts
Do this for a week and there’s no money in it for botters. Should have been done over a year ago though.