This 100%. Dialyzer helps a bit but is difficult to work with due to really cryptic errors. Also the workflow of having the typechecker run as a separate proce

This 100%. Dialyzer helps a bit but is difficult to work with due to really cryptic errors. Also the workflow of having the typechecker run as a separate process not part of the compiler feels really cumbersome; it's easy not to notice you have a type error somewhere (often miles away from where the error originates!).