I was just thinking about this the other day, and I decided to pop this question to the FT community also for some general discussion. American Airlines has a phenomenal lie-flat product on the A321T for flights between LAX-JFK, etc. I think it would be amazing if AC placed lie-flat seats on some of the 737 MAX (when they are returned to service), and also on the A321. Flights between YYT-LHR, YHZ-LHR, YEG-YYZ, etc would be much more bearable with a nice bed to sleep on.

I know many of these routes already use widebody aircraft, but it would still be nice to have this product on some of the narrowbodies!