Feel better?
Yes, the situation isn't perfect. It is also inevitable some parts of the merger are compromises that don't work out perfectly for us.
The good news is that you only have until October or so until the last flight bearing a US number. I'm sure we will all make it through these dark times until then.
As a PHL flyer, I have yet to take anything but US metal direct to anywhere I needed to go. Any additional AA routes through DFW or ORD from PHL don't price low enough to make up for the added time of connecting (at $100/hr).
I'm taking my first AA codeshare as the initial leg of a YYZ-LGA-BOS trip in 2 weeks FWIW. Maybe I'll come back and rant with you after that trip.