@39,
I should probably make a couple clarifications, since I think we're coming from different places. Firstly, he played demo in the games I played with him, so what I was saying applied to that. Secondly, the team in question is a brand new team of players who haven't played in a league yet. So I'm basically treating it as a pug team, since until they get to know each other and settle into their niches, that's basically all they are.
So taken from that perspective, when I pug I usually assume that everyone knows, more or less, what they should be doing. You don't really have a choice since it's hard to micromanage players you don't know as well, and who don't know you. So when I call something like 'try not to overextend,' I usually assume that the guilty player knows it's directed at him. I try to reduce the social pressure because it's something I struggled so much with. If there is a significant problem I prefer to talk to them one on one about it.
Now that I'm done explaining all my teaching methods I should say I'm not actually leading the team. I was originally going to play for them, but now I'm more of a coach/adviser (work hours). I know you're a lot more experienced than I am, and I like to think that the team will reach a level where your methods are more effective. I think that criticism taken badly isn't much better than giving no criticism at all, and until the roster is filled and finalized I prefer to err on the safe side.