This is not really what you had been asking for but inertia.js is doing a spectacular approach of combining Laravel and a SPA. All the benefits you have with MP

This is not really what you had been asking for but inertia.js is doing a spectacular approach of combining Laravel and a SPA. All the benefits you have with MPAs and no need to build APIs for the SPA view part. That‘s the only SPA model I have seen which is a real productive approach.