The problem with roadmaps is that they look great until you start following them. Then you discover all kinds of things you didn’t think of in advance, and the final product looks different than you expected.
But in short, I suspect a lot of people think this is important, and I think that Julia 1.9 prepares the groundwork nicely. My not-very-good crystal ball tells me that if you want to start preparing for a world where you can compile large applications as binaries, one of the most productive things you can probably do is start running JET over your code base and fix every runtime-dispatch you can. The more inferrable your code-base, probably the easier it will be to generate a good binary.