I have explore a few options to optimize Asia segment,
Drawback on connecting to India,
- limited connection from NRT, when I checked, only BLR
- from India - KUL, MH is using narrow body plane
- less favorable airport and lounge experience

I tried to add NRT stop before my HKG connection to US. Was prompted by the manual tool that it's against the rule, cant fly to same direction / airport twice. May be I will do KUL-INC-HKG-JFK then

On the other side, I am again looking at my US segment, I want to try the lie-flat AA, ie 321T or 32B. Based on what I googled, this flight is between JFK - LAX (other airport like SFO, MIA, BOS are not in my plan). But when I checked seatguru, it seems that the MCO-LAX and PHL-LAX are using 32B too.
Still researching, trying to figure out why is AA using same code for different flight