I see alot of important stops skipped. Also, there's no need for having an express train cause that's just an train.
Also, where would you be getting the resources for these express/super express trains? Hopefully by not cutting regular service in half.
If anything maybe a few "super express" trains on some sections during peak hours might work. Like a handful of trains only making stops at Pelham Bay Park, Parkchester, Hunts Point Ave, and 3 Ave-138 St in the Bronx in the peak direction. or extending the express portion of the to King's Highway or to Neptune Ave.