I can personally vouch for the value of Scala macros, which I feel really transform the language. With macros (at least with macro-paradise) I can metaprogram S

I can personally vouch for the value of Scala macros, which I feel really transform the language. With macros (at least with macro-paradise) I can metaprogram Scala more powerfully than Ruby, while retaining typesafety. Scala + macros is a pretty remarkable language, being very dynamic while also being very safe. The macros support included in 2.10 is pretty basic and difficult to use, but with annotation macros and quasiquotation in macro-paradise those issues are eliminated. And who are you to determine what gets priority amongst open-source devs? Does macro support make scala a worse language? Are you upset that an unpaid researcher (not an employee of typesafe) decided to spend time implementing the macro system instead of working on the IDE?