I took a WaveShare RP2040-Touch-LCD-1.28and made a program to use it as a touchscreen. This is still very much in the beta phase but the proof of concept works. Here’s my GitHub repo for it.
I’m planning on integrating it into my next split near the thumb cluster.
Regarding the scrolling, do you reckon it’ll be possible to implement it like how the Galaxy Watches do their scrolling?
If you touch the edge of the screen and rotate it, it scrolls clockwise and anti-clockwise. Works decently enough although I do prefer the physical wheel.