Positioning is always a good one, I know someone who got marked down because he didn't stand on the goal line at a corner, next game he did that and got marked down for it.
Sounds silly that.
I had my first FAW assessment a while back since I'm going for my Welsh Badge this season. That was the first assessment I've had that asked me to change from the goal line position for corners. I was not marked down for taking up those positions. I also had a positioning query for free-kicks, again, wasn't marked down for it.
I think marking down for those positioning issues seems petty and should only be happening if the positioning is what led to a KMI error. If I were to get marked down for following a previous assessment's advice, I would honestly raise it with the RDO (whoever is in charge of assessments in England) so that they could unify the advice being given for the level and stop such issues occurring in the future.