While these would be welcome improvements to Java, the future of Java is not about these sorts of tweaks. What Java really needs to revitalize their ecosystem is a sustained focus on improving developer experience with modern applications.

That means elevating languages like Kotlin and Clojure, and producing modern libraries for basic web development so that there's a foundation of high quality components that people can build with, similar to .NET. Today, Java developers have to pick through a confusing mess of implementations for basic things with highly variable levels of quality and interopability (the biggest gap probably being security).