I tried customizing my own control layout but it seems like this new feature is a failure
The good news is that I found a near perfect alternative (Controller Layout 4) and this is why:
* select = landing gear
* start = Pause menu
* L2 = left rudder
* R2 = right rudder
(even though, I prefer the rudder to be on the right analogue stick X-axis, by having the rudder on L2, and R2, you are able to have a smoother rudder control compared to that of the aviator layout (L1, R1) because you control the amount of pressure applied to it.
* Directional Pad = Commands to Flight
* Left Analogue stick = elevator/ailerons
* Right Analogue stick (Y-axis) = Throttle --- (no more keeping the R2 button pressed

)
* X = fire
* O = map
* Square = rockets
* Triangle = bombs
R1 = Zoom, finally!!!
L1+Right Analogue stick = free look (works great, and feels comfortable)
L1+X = trimmer
L1+Square (or L3) = flaps (gives you an option on how to control flaps, nice

)
R3 = Toggle camera view
- Unfortunately, you wont be able to enjoy the cannon/machine guns separation unless you use the default control layout

which, in my opinion, sucks
** notice I was comparing this layout to the Aviator Layout (the all time favorite before the patch)
Customizing your own control layout is not working and I think this is the best alternative.
** Overall, this layout feels very comfortable