Maybe I expect too much

I've been growing increasingly annoyed with the raid groups I've been in recently. Pugs are - in general, and as expected - frustrating. But even what has become my frequent 10 man group has begun to bother me. All highly capable players, but seemingly unable to follow simple instructions in a manner that I find acceptable. I've always been a bit of a perfectionist, I realise that. However, I don't think that the expectations I have of them are overly high.

If I tell them to stack on me (or anybody else), I expect their character to be indistinguishable from that person - not stood within 5-10 yards of them.

If I tell them to stand somewhere, I expect them not only to stand there but to continue to stand there unless they're told they can move, they ABSOLUTELY HAVE to move, or are moved by an enemy.

I expect ranged to actually STAY at range. If they can attack from 30-40 yards away, I expect them to be close to 30 or 40 yards from an enemy unless they're told otherwise.

I expect EVERYBODY (with the possible exception of the other tank) to stay behind me. Not stood with me and certainly not stood in front of me, unless I tell them otherwise.

I know what I want, and I expect to get it. I'm not asking them to be the greatest players in the world ever, just to do simple things in a professional manner.

So, you tell me. Am I asking for too much or is my annoyance justified?