An expansion for the 2nd Avenue Subway to the Bx or Bk, I DON'T see for a very long time. The way finance is these days, not possible. Plus the MTA would have to go through the communities and see if things will work out. Those on 2nd Avenue are pissed off over the building of the Line, due to health concern and noise. But im sure they will ACCEPT it once its done.
The 2nd Avenue Line via Hell Gate/NEC Line, isn't a bad idea, but then the line maybe be subjected to FRA. That line is owned by Amtrak, so the MTA can't just go and do what it wants. Plus the media has to remember that there is Fright service on that line sometimes, which use the un-electrified tracks, coming out of Oak Point Yard and Hunts Point, the Bronx.
TBH, the MTA shouldn't worry much about the Bronx, as we can handle it. Maybe Metro-North service along the NEC will do.
Staten Island NEEDs some support here. People only have the SIRTOA (1 Line) and Local bus via Ferry to get to Manhattan. Other options is the S53/79/98 via the , Express Bus service or car. The MTA President, thinks SBS will solve all this. Not entirely, since people will still have a longer commute to get to Manhattan. Unless he can come up with a plan to allow SBS to run via I95/NJ495 combo or I278 directly to Manhattan out of SI, without paying a premium for Express Bus service. Or an extension of the SIRTOA into Brooklyn
I would prefer also seeing the extension of the NJT HBLR into SI, rather then making the S89 a Select Bus..
We do have service, even tho there ARE spots in the Bronx under served and replaced by Bus Service.
No Subway Service in:
-Riverdale or Spuyten area of the Bronx (Except the via Bus, or Metro-North Hudson. The Hudson Line for those areas is used higher compared to those on the Park Avenue Mainline (excluding Fordham). )
-Along Webster and 3rd Avenue. (Alternatives would be the Bus and/or to the Concourse, Jerome and White Plains Road Line or Metro-North, but ridership isn't to high)
-Co-op City, Throgs Neck, Locus Point, Country Club. (Requires Bus service and/or to the Pelham Line)
-Going Crosstown in the Bronx requires Bus Service or and/or Bx12+Select.