really useful for chained method calls that already are crowded because of PHPs -> operator
C# has it and I want it in PHP too. It is very handy for implementing new interfaces with simple getters for example.
Just look at how other languages solve this. C# for example. Make short closures like that.
At least once a week, I throw away an array_map because it ended up looking too bloated and go with a classic foreach instead. Short Closures 2.0 without the use(...) block would've solved this problem, just 2 votes...
Creating traits for default implementation is just a pain. I want syntactic sugar
I wrote down some thoughts on this RFC on my blog. I think it's worth rethinking our current definition of what "an interface" is. Especially since many languages are interface default methods as their way of multi-inheritance.