I consider interesting the asynchronous delegates, something like: val result by deferred, this is really similar to the blocking version val result by future, so this considerations are debatable.
Synchronous and asynchronous worlds do not fit well together, blue and red functions are -after all- incompatible, you already mentioned data class.
Finally Kotlin’s coroutine library enriches suspending functions with coroutine scopes, this makes harder to implement a suspend lazy{ ... }, I already exposed some concerns in issue #1065.