I don't think the (B) needs 24/7 service. The (A), (D) and (Q) are plenty good by themselves during the overnight hours. Now, what they could do is have the (B) run to 145 St evenings at its current midday schedule and limited service (every 15-20 minutes) on weekends for riders who want Sixth Avenue service from Brighton and vice-versa. Of course, this is just an idea I'm throwing out there and I'm well aware of the agency's financial constraints. Please don't point that out.