They tried this in the mid 90s. They were called COOLs (Concurrent Object Oriented Language). The conclusion at the time was: Using OO for this is already a step in the wrong direction; generating C++ is another. l'Histoire se repete.

a) closed source

b) what does this exactly bring to the table comparing with Erlang/Elixir, Rust, Haskell or Go?

I think that chances of this project getting traction are low. So question is, why?