This is more a question than a proposal but how many trains per hour can run on the  assuming the following?  CPW Local/6 Av/Brighton Express (weekdays)  CPW/6 Av Express/Brighton Local  2 Av/Broadway/4th Av Express/Sea Beach (weekdays)  2 Av/Broadway/4th Av Express/West End   Astoria/Broadway Local (24/7; every other rush hour train to Brooklyn, to CI via Sea Beach weekends/late nights) (The  would have to run at least the current combined number of N/W TPH)