The features are split up, and there is only one approach to them. I made a custom build that incorporates all of the different things I’ve done, beyond the ones below that deal with selection.
The devs do not appear interested in any of them. Like you say, it was expected. The fact that so many of them helped me, time and again, shows you that they are great people.
What I am saying about the average user, is that they don’t care how selection works. You present them with blender, and they will use it however it happens to be.