I kinda have to disagree with you. The runs just fine with the R160's, and if anything half of the base order should go to the and , which have an even higher amount of ridership. You haven't seen Astoria during rush hours, pre-pandemic, it's a mad house.
And honestly, the is the worst when it comes to operational efficiency. They still haven't figured out what they're gonna do with the after they f**ked up the R179 order by switching the amount of cars between the 4 and 5 car sets. If they're smart, they would take each B car from a 4 car set and insert it into another to make them 5 cars (like the R188's).
The smart thing would have been to send the 10 car R179's to Coney Island and send some of the R46's to Pitkin/207th St, that way the is fully next-gen when the entire R211 order comes in and Astoria & Brighton riders can stop complaining about the R46's.
I can see why they made the windows shorter in order to accommodate the larger door housings, but I agree with your standing. With today's technology they could've at least made an effort to keep the window size.