More of a suggestion then a wish as I dont need it.
As i had the clipboard up the other night I was looking at how if you hold the mouse over a selection a little pop up came up to say what each selection was for and had an idea for noobs or anyone unfamiliar with a new plane layout.
Might come in handy in offline mode for new players if when you paused the mouse over a gauge a similar pop up came up with a short description as to what that particular gauge or control was when looking around the cockpit.