I don't have enough colonies or get properly organised in my queen rearing to know if there is better performance from late-requeened colonies early the next season with OSR and Varroa. Maybe someone with more colonies can comment? The only possible problem I could imagine is that a young queen might have more brood going through the winter, making winter OA treatment less effective.

If there was clear evidence of a benefit from autumn requeening it might make overwintering queens in mini-nucs less critical. It might also encourage people to raise good numbers of queens during the best part of the season.