To disconnect the autopilot of the A320 use the assignable button commands for the autopilot disconnect. I think I had a version where you can click the sidestick as well, don't know if that is implemented in the public beta though.
Good news! I just did another autoland and I was able to disable the AP using the red button on the sidestick! So this has been implemented in the update and works as it should already! Nice! So no need to work on the AP buttons themselves!
The reverse has to be assigned in the controls as well. I have the xyzwhateverforgotthename throttle quadrant with three buttons that are triggered when I move down the levers. I use them for reverse, works really nice.
I assigned a button to the reverser on my joystick and it works like a charm. I do have to keep the button depressed for as long as I want to use the reversers (the button doesn't work as a toggle) but that's fine with me.
One odd thing: I have a Logitech Extreme 3D Pro joystick which has a rudder twist. I don't have it assigned to anything though because I have rudder pedals. However, when I am standing still on the ground I noticed that when I move that twist, the PEDAL DISC 'thing' to the left of the sidestick turns along with my movement of the twist...?! That thing can't be clicked or anything but it does move when I use that twist. I looked all through my controls but the rudder twist wasn't assigned to anything. Whenever I use this twist I also see the rudder indicator at the top of the PFD move left and right! When I start to move the plane the PEDAL DISC keeps on moving until speed reaches 40 kts: until then the rudder indicator also moves along with it, but the plane doesn't move accordingly (it does when I use my rudder pedals). At speeds above 40 the PEDAL DISC is stuck when I move the twist.
Nothing serious or problematic but I am wondering what this is.