Another thing about the NG autopilot, I've seen it once (and a mate of mine twice) bank over 30 degrees of bank on in LNAV, when it's blown out of a turn calculated for a slower speed than it's actually doing. Now the A/P overshooting the turn is my fault perhaps, but any A/P should NEVER overbank to that extent (on 2 of 3 occasions it triggered the GPWS bank angle warning before it could be taken out of LNAV). That's just bad design.