I fly several times a year between JFK and ZRH. Now that they have removed the NSs and require a connection in PHL or LHR, especially since my most recent trip JFK-LHR-ZRH and ZRH-PHL-JFK required long connections in LHR and PHL with delays on JFK-LHR, I emailed AA CR noting these issues. I also noted that other airlines, DL in particular, run NSs between JFK and ZRH, which would equate to lost revenue when I fly DL (instead of AA).
I just received a response, some of which was probably "boilerplate", but the main gist was that they lose revenue on that route--how come DL is (presumably) making a profit.
[The ZRH-PHL flt is scheduled to arrive at about 3 pm and the PHL-JFK on a "small" RJ requires a 3+ hour connection--a big annoyance, even more so if the PHL-JFK were cancelled since the next flt is the NEXT day.]