An urgently needed improvement to the calendar would be an easy tool to mark some nights as "available, but no possible check in". If I mark such a night "unavailable", I might miss a week-long booking that includes it; But if I leave it "available", I might disapoint a would-be guest by declining a request when he has seen it "available" on the calendar, or worse, by canceling a direct booking (now that I have been compelled to accept direct booking).
Also: an easy way to adjust "minimal stay" for a specific period, without changing the booking rules for the whole year...
From Brussels, Bernard H.