Took me a bit to figure this one out. If like me you've become accustomed to selecting destination before you ever jump to the system, it's an annoyance to have to bother with the nav panel. I was hoping it'd be like the docking comp and just be on when turned on. I guess a binding would suffice.
Having to use the panel to enable it is slow if you are not already viewing the destination in the panel. For instance if you are following a route from one system to a station in another, upon entering the system the target station will be selected in the HUD, but you will need to scroll...