One problem they really need to address though is that as soon as you put everything in a single compilation unit, then compilation is single threaded and dog s

One problem they really need to address though is that as soon as you put everything in a single compilation unit, then compilation is single threaded and dog slow. Compilation units maybe make sense for C and C++, but for other languages they are just a way to structure the compilation. It should be automatic, and just better all around.