Baremetal demoscene, anything else it too easy
Like I have said before we have a choice now Asm, C, C++, Rust, Pascal.
What would be interesting is interpreted versions, Basic, Python, Lua, JS....
BBC Basic looks like it could be modified.
Those would be like a small OS's.
And small OS's are nice for IoT stuff too.
For a year now I have been trying to figure out a CPU/GPU language that has native support for graphics.
Lots of SoC have GPUs of some sort, most use OpenGLES but need a Linux library.
Ultibo has shown it is possible use that method, but it is cheating a bit.
I'm dancing on Rainbows.
Raspberries are not Apples or Oranges