My most favorite features of Crystal include format, spec, docs, dependencies management. Macro is more magic than Ruby, it's a bit inconsistent to me for now,

My most favorite features of Crystal include format, spec, docs, dependencies management. Macro is more magic than Ruby, it's a bit inconsistent to me for now, but it could be improved in documentation. Working with Generics is a bit "trial, guess and error", due to lack of documentation again. ORM is a bit lacking. Other than that, it's more than enough to deliver production-ready codebase in a pleasant, simple and clean way.