Wendell Adriel

Most of the time when creating an Interface that shares some implementation we would always create Interface + Trait. This is just more work. With Interface default methods we would get rid of the Trait and be able to have it in the interface already!

Being possible to create closures that share the scope would be a game changer because it would mean less work and headaches with the use() block that in some cases if you don't pay attention it could lead to a lot of time waste on refactors and maintenance in code.

I think that with this, we would be able to write cleaner code that's easier to understand!

This is a pattern already used in some tools and frameworks like Laravel with pipelines and since we have arrow functions and first-class callable I think this would bring a lot of possibilities to the language.

Also this is already proved really handy on other languages.