Hmm, for some reason this thread popped up in my "responses" list, and it's perfectly timely, because I was just thinking about this the other day.
I am now a firm believer that no routine, whatsoever, is necessary, and any compromise thereof is cheating. Maybe for a competition you would like a more rehearsed set of figures so that you display your best at all times, but apart from that, lead and follow should be just that. None of these "connectors" and "queues" and whatnot.
Right on! I have no problem with learning my partner's dance figures and even routine - but only by dancing it, not by rote. I tried to explain that to my pro - the effect of learning is to create two partners, the one in my arms and the one in my head and they never really agree with the important stuff. that being the physical expression of emotion - the whole point of dancing.