Splitting discussions here into a separate thread as requested by skade.
I have created this that is super early right now and you can join on it as it will be the main activity hub for this working group (similar to how the rust-embedded WG is organized): https://github.com/rust-gamedev
What I am proposing as an initial plan has been explained in a bit of detail here: https://alexene.github.io/2018/11/15/Rust-and-game-development.html
Initial thread where I answered the questions for why this working group would be beneficial as well as answering the required questions:
We can discuss my proposal here in a bit more detail in order to not pollute the above thread.