Just to be clear, someone1223 is not a developer for GrapheneOS.
Based on other responses in this thread so far, I'm not sure if everyone was aware of that.
I also don't want to imply, nor do I think, that anyone intended this kind of confusion.
Sorry for the awkward post.
Moving on... It's true that Android Auto is a big feature for GrapheneOS. When I started using GrapheneOS, it looked like Android Auto was never going to happen. Very impressive what they can do!
As for other features that were mentioned here, I'm not sure if they're on the project's To Do list. There are other features that are coming soon, many of which I think a lot of people in our community will be excited about.