Swiss Airbus A320 with Autopilot and Cockpit

Mobile-friendly versions: https://www.simplerockets.com/c/BylX0u/Swiss-Airbus-A320-400-parts

With just under 1000 parts, this craft is a compromise of detail and playability. I wanted to make it as detailed as possible while still being playable on most devices, as it has always bothered me that most higly detailed crafts are not accessible by more low-end devices. The other main goal was to create a highly accurate replica of the Airbus A320, both in it's appearance and performance. The takeoff speed of this craft is at about 80m/s (about 160kts), the landing speed at 70m/s (140kts). The top speed is at ca. 175m/s, and while it technically is able to fly faster, I can't guarantee that it won't fly apart.
I am no programmer at all, I don't even know if I knew the basics of the basics, but this game really sparked my interest, and so I tried making an autopilot. It is far from efficient, but it actually works quite well, which I'm a bit surprised by...
Any feedback would be greatly appreciated!

You can do with this craft whatever you want; you can use only the cockpit, you can change the plane to an A321, you can change the livery, you can use the autopilot for your own crafts (make sure to change some (well most) parameters). If you want to give credit, you obviously can, but it's not nessecairy. I'm happy if my "work" sees other applications!

Demonstration Video: https://youtu.be/1T_vO7GP6to

Activation Groups:
AG1: the plane will go to and maintain the entered altitude
AG2: you can enter a heading that the plane will follow, or set the heading to your selected target. Unfortunately, the program does not account for Droo's curvature, so I wouldn't recommend it for distances bigger than ca. 800km.
AG3: the plane will adjust the throttle to match the craft's speed with your entered speed.
AG4: you can enter a runway, and the plane will adjust pitch, roll and throttle automatically to eventually land on the selected runway with quite good accuracy. The program is pretty effective considering it's simplicity, but there are some hard positions where it won't be able to find the runway from. Most of the times it finds it flawlessly, but I recommend a quick save before the activation just in case. You can always cancel the approach by deactivating the activation group.
AG5: a little auto-trim program. It updates only when the pitch input is 0, to prevent canceling out an intended user input. Intended to be used during manual flight. For manual trim, use Slider 2.
AG6: retracts flaps by 33%. Only one activation/deactivation nessecairy, the program ignores the activation state.
AG7: extends flaps by 33%. Only one activation/deactivation nessecairy, the program ignores the activation state.
AG8: retracts/deploys landing gear. For some weird to me unknown reasons, it sometimes happens that the main gear doors close with a delay of a few seconds. You can change the value in question in the landing gear sequence program (I marked it with a green commentary block to the right of it) if it botheres you too much.
AG9: activates the speedbrakes. Unfortunately it does not have any aerodynamic effect, because otherwise they would just brake off.
AG10: some useful information like takeoff and landing speed etc. gets displayed for as long as the activation group is on.

If somebody found out why the heck the plane lands 1-2m to the west of the centerline of runway 13/31, a great mystery would be solved...