I'm a bit disappointed that there's no metaprogramming support in Kotlin. Even Groovy had some AST-level transformators. Maybe we'll get some high-level API for writing APT-level tools in Kotlin itself ...
I hate clojure, but that complaint is EXACTLY what I was thinking must drive clojure users to it in the first place. Clojure just seems dumb because the jvm is such a hassle and bloated, sbcl is incredible, racket is good, guile is incredible, etc plenty of other lisp environments, why waste time on java?
I hope kotlin native is as good as scala native. I don't care about kotlin vs Java, but kotlin vs scala native is HUGE to me.