It's threads like this that play a part in the attitude I get towards foamers.
All the OP really wants is to make sure that the only goes to ONE place, and also wants to eliminate the shuttle and can't seem to comprehend that the Rockaways DOES NOT need two full services running down there just so that each and every station can be served by a full length line that has an individual letter. Meanwhile messing up service all over the city just to get his goal accomplished. This is fantasy world thinking. Also the reason that the and both run express on CPW on weekends is because there is MUCH more demand for service to upper Manhattan and the Bronx than there is for CPW service. The would get way too overcrowded if it ran local on CPW, and the can't run local without causing delays unless it also ran local on 8th Ave, which it can't do with the and running there without causing MORE delays. And the has very light ridership on the weekends, so that's the best solution for carrying CPW riders.
Oh, and 205 St can barely turn ONE service, let alone having both the and run there!