"Who's in charge around here?"
For many guilds the Guild Leader is the Raid Leader and the recruiter and the one shouting "Come on guys, you've got to get better". The problem is that this way of doing things fails to understand and then proficiently execute the various things that need doing. Expectations can become unclear, goals are nebulous, and everyone is suddenly expected to be on the same page and just as competent as the loudest disgruntled in voice chat. This voice is inevitably not the raid leaders.
Approaching your raid team with the mind set that this is an organization with goals to be met and understanding the various positions that need to filled can be a great way to minimize stress and increase not only performance but also the enjoyment of the guild as a whole.
Let's break it down.