> 2 - Cannot subclass Data classes<p>I know why you want it, I've always had that in scala where a case class is also not subclasseable.<p>But trust me it's a extremly bad idea. A data class should be final and only contain data. there is no reason to subclass it and if one day valhalla will be coming, it's even a worse idea.
> Kotlin code is much less verbose than Java code. This makes it more pleasing to both read and write.<p>Is there any language in common usage today that is more verbose than Java?