I am also in favour of adding the D-pad layout (and texture )prior to 1.20.70. I don't like how you have to double tap the down button to stop flying and the spacing between the arrows is inconsistent to the original d-pad. Also when turning on experimental control layout, the buttons get smaller. It'd be best if the location/size of the buttons didn't change when turning this feature on, for people who only want to change the opacity. Prior to this update, The sneak/jump button, in between the arrows, would change size when turning experimental control layout.
I am playing on Xiaomi 9t pro. Never had performance issues, until the 1.20 updates.