I'm going with healer so I don't need Wynne - since this guy is my jerk character it'll mostly be the jerky characters I'll bring with me.
(IE: No Wynne. Or Alistair, guess I'll try Sten.)
And yeah tbh ALL the AI/tactics are kinda stupid so I controlled Wynne all the time after I got her. Always control the healer. Too risky not to.