While we all have our standards for what is good in terms of ratings at each level of play, I think a great deal of it depends upon the makeup of the team you have around each individual player. Based upon what some of you are saying, I'd imagine you agree with that.
If you are weak as a team in a particular category, a guy who is high in that area will obviously help with that deficiency while a guy who is low there won't help much. If you have some strengths as a team, getting more guys just like the ones you have won't be as good as getting some diversity, even if the guys you get are talented.
I think I have a bit lower of standards than some coaches in some areas, but only if I have too (we'd all love to have the perfect player at every position but it rarely happens). I know when to pick my battles and when to back off, and I don't have to have a phenomenal player when a great one will do, and sometimes I can even settle for a good player when I can't get a great one.
I say all of that with the caveat that I am NOT among the great coaches in HD by far. I hold my own, but I've still got a ways to go before anyone should assume the way I do things in any way resembles a possible "right" way.