Seriously, i'm not even gonna name anyone specific, but the problem hasn't been solved just because there was a forum post and poll on whether or not to do it. There are still people multiing and there are still people botting. The former being the more abusive IMO because of the extreme advantage it gives to talented players. Have one of your lower level immortals or urself create a bot who spams the wholist. Have an analytical coded system (Oligo seems to be good at this shit) determine which chars are only seen on together (the purpose of multiing is to increase your personal power so they will often have both their chars on at once) or very often seen on together. Then have an imm check through game logs of these suspected Multi/botters to see how many times suspicious actions have been committed. Running to the same location without any communication, mysterious tells that are asked to one char and answered by the other, etc. You must understand that people who multi aren't the shitty players in this game, they are the talented players who crave efficiency. They would do nothing to undermine their efficiency and it will show in the gamelog.
To make botting more difficult: REMOVE SCOUTS MESSAGES FOR WHEN INSTINCT IS READY AGAIN, SCOUTS ARE PROBABLY THE MOST COMMON BOTS BECAUSE U CAN LITERALLY HAVE AN OCEAN SCOUT TRIGGERED TO USE INSTINCTS AT ANY GIVEN MOMENT. Remove similar messages. It is not that difficult to type score to see if something is ready to use or to simply attempt it, this only allows for someone to trigger themselves to such a command.