We will not be bringing the Flight Details tab back.
However, if we have made some actions needlessly hard to get to, we can certainly rectify that, we just need to understand exactly which actions are being requested. Many of the people complaining about the lack of flight details tab are trying to see the flight time or distance, and simply haven't noticed those details are now permanently displayed at the top of the screen, for example. Setting the aircraft for a flight is something you do once (if at all) and therefore we don't think an additional touch to access it is a huge deal. So, is it setting the fuel? The weight and balance?