Pick a world not a team. You can change a team, you cannot change a world.
Nothing in HBD requires a split second decision. If you don't know, ask. If you still don't know, ask someone else. And, if you're still not sure, don't do it.
Look at ratings but don't ignore stats. Once you have a decent sample size, what you think you see with ratings should match up with production. If it doesn't, you don't want that guy.