It seems like the approach which should really be taken instead is allowing the importing and/or definition of biz/pattern-specific DSLs. I don't think there's

It seems like the approach which should really be taken instead is allowing the importing and/or definition of biz/pattern-specific DSLs. I don't think there's really any way to make a language with this stuff entirely built-in (rather than providing a general DSL feature) which is both flexible and terse