Nicolas, I've also been channeled as a Warrior, a Server, and a King! The King was the latest diagnosis and the one that I think is actually correct, with Server casting. I think it took a while for me to throw off family imprinting to get to show what I really was.
It's really hard to say what the special benefit of the Michael Teachings is for me, other than it is the foundation for my worldview and permeates everything I do in some way. I'm not saying I go around typing everyone and trying to figure out their overleaves - it's actually the many other things that I've learned from them, about acceptance of myself and others, about how to be happy, about how energy works, the relationship between essence, personality and false personality, about how to understand the universe and everyone's place in it. As far as overleaves go, I actually find Soul Age (or Perspective, which I think is the more useful term as it gets away from a false sense of hierarchy) the most helpful overleaf of all as far as understanding and accepting others and their perspectives, goals, and desires.
Unlike Nicholas, I do not love telling people about my non-physical teacher! There is so much incredibly useful and life-changing information in the MT, I wish I could tell everyone about it without having to say it's channeled and immediately turn it into something kooky in the eyes of people who aren't into the new age thing, but could seriously use the information the Michaels present. I just call it my "philosophical system" and if people ask I tell them more about it. Most are nice, but I still think the channeled thing keeps them away.