1. Toggle option for the turret/freemouse look. would be nice not to have to hold the button down all the time. maybe a double press to toggle.
2. Locked throttle buttons, like ¼. ½, ¾. Full like a naval ships , or a gradient with +/-
If i think of others i'll add it here.
I've seen a lot of other post good ones, like the toggle flight assist. I would really love that one.