I only join "chill" raids, no matter how confident I am with my own skill. I'd rather do exactly what you said, spend time working on what's wrong and helping people learn, than get stuck with the obnoxious db's who will point out someone else's mistake in a heartbeat but fall inexplicably silent when it was theirs. Raids can still be fun if people are patient and courteous. But man, good luck finding 6 people with that mindset anymore.