I think that will do wonders for WordPress. The main issue right now is that is the wild west. Everyone codes to their standards, or no standards and you end up with code that has a high level of complexity, code should be easy to work with in order to add new features quickly and fix bugs. Less time working on code means more time working on adding more value and fixing bugs faster. Right now there are functions that go for hundreds of lines, that can moved into a whole group of service of classes that will make it a lot easier to work with. Also, this means that it can get faster because its not enough to just run the latest PHP, you also need to follow the standards and the new ways to work with that code, by doing so you are taking full advantage of the language's caching and faster functions. Overall, I hope they do this soon. Wordpress is screaming for it as it is very popular but very poorly written. We need a SOLID codebase.