A few personal takes on the microcontroller/embedded rust side: I've been fiddling a lot with the stm32 and rust over the past several months. The fact of the matter is that having rust at your disposal feels like you are given a set of high quality scalpels compared to the otherwise good old C. I mean having a package manager and easy access to third party libraries is an absolute heaven and it's a very enjoyable experience. BUT... It is enjoyable once you have everything up and running of course, which on the other hand is a huge pain in the ass. I feel like there is a gap to be filled between plugging in an embedded board and running a simple "blink the led" program. Unlike say an arduino(or even a raspberry pi pico which I genuinely dislike after fiddling with it as well), where you simply plug it in, open the arduino IDE and click "Upload". If someone dumbs the process down to something like that for Rust, I feel like it would completely take over this niche.