There's three things that I've noticed, 1 and 2 in the media and the 3rd while flying as pax:
- they've saved weight on whole bunch of systems and parts. If you don't retrim the a/c before a certain speed after t/o, the trim servo can't handle the forces anymore and you'll have to slow down before you can use the trim again.
- most pax are not used to a sliding lavatory door. Quite a few have become trapped inside during the first few weeks after introduction on the line.
- it's the first a/c in which pax have tunnel vision at any G-load.
Erik.