I'd say an implementation in all popular languages would be important. I hear decent work has been done with Rust, and I'd love to see something for Elixir. But

I'd say an implementation in all popular languages would be important. I hear decent work has been done with Rust, and I'd love to see something for Elixir. But as I understand it part of the problem is lack of spec/documentation. If we had that, perhaps it'd be easier for a variety of implementations? php, ruby, python, etc.