I wish the Pi universe was a bit more cooperative and played well with others.
It would be lovely if three things were to happen:
* Raspberry Pi to upstream all their kernel mods and dtbs
* Pi hats of all kinds to work out how to interoperate with each other and work with other platforms - hats are great but tied entirely to Pi as an ecosystem
* Raspberry PiOS to actually talk to Debian about how to build an OS
As a Debian dev, I'm very biased but the first and last points are very important - Pi 4 and earlier models can (nearly) work with vanilla Debian but it is bondage and discipline - and there may be things that depend on a 32 bit armhf distribution that Raspberry Pi don't really care about.
SBCs from China and Armbian - don't even go there....