Having played around today with 3.9 (iOS), I do miss the Flight Details tab for 1-click access.

I use it quite a lot not just for W&B but also to set aircraft, set takeoff time, view flight time (on iPhone, though this is now on main map like on iPad so not an issue), and set fuel. I guess this is more important when planning than in flight.

I think it would make perfect sense to have the landing time also on that screen. This way the user can play with different altitudes or power settings and would see the impact on the landing time / duration of flight instantly.