Judging an August supersedure queen: what I'm writing down now so I can tell in April whether she's any good

Uppsala, third year. Two of my four colonies superseded in August without asking me, which I only worked out when I found unmarked queens laying in September. Both are now clustered for winter and I won't see a frame until April. The question I want to get ahead of: how do I judge these two queens fairly next spring, rather than either panicking at the first sign of a poor pattern or giving them the benefit of the doubt all season? What I've recorded now, while it's fresh: date I first saw eggs from each, the size and tidiness of the last brood patch I saw, and that both were mated in early to mid August, which at 60°N is late enough that I'd like to know they got a proper mating. What I think I should look for in spring: a compact patch rather than scattered; worker brood rather than drone brood in worker cells; and build-up speed compared with the two colonies that kept their old queens, which is my control group. Is there anything else worth noting now? And how long would you give a doubtful spring queen before requeening — first inspection, or a second look a fortnight later?