Let the user create own, customizable info windows similar to "Flight Info"/"Map Info".
These windows should save their position between sessions (this would be welcome improvement for Flight/Map info windows too). Also be resizable.
Let the user select which type of information they want to display in the window from the list of possible options.
Let the user set up multiple such windows (that could be opened by corresponding buttons on the panel on the right edge of the screen).
The core idea is - Flight/Map info windows are too cluttered, there's too much useless information for any particular point in time, also various options settings that are rarely used. So let the user set up similar style windows that user could set up to their liking specialized for situations that they prefer, for example info for take off, info for landing, info for orbital flight, etc. that would include only data that player wants.
This is such a good idea!