Peerless do require good followers when those people are new to the group - I can't say how often we took along some other person to do peerless and we explained what they had to do, but nooooo... why follow people who have done that peerless easily over 100 times? *rolls eyes*
Even now we sometimes still check with eachother - "I'll heal, ok?" "Sure, and I'll cure"... even such short conversations help keep the death rates at peerless (and most other places) down to a minimum.
What annoys me the most though is when people don't take any orders, at all - often those are meant in a good way, to help the group do better (or even to improve ones tactics), but many think it's offensive if they let someone join and that person asks others to do stuff like let the tamer attack first in doom so that it doesn't result in an archer running like crazy (and most likely dying if nobody interferes) because he/she attacked first.
If the players are experienced, it's ok to hardly use any orders, but if they're not (or used to doing everything solo) it is essential to have orders and people who follow them.