The big open question I have about kotlin native is the gc story, i.e. How is it implemented? Neither boehms (libgc) or reference counting are adequate solutions imo. Last I knew go was in the process of moving to a generational gc, state of the art as in hotspot jvm.

Also, the multi process, thread, coroutine, async io scheduling story in go is very compelling. Java (and by association kotlin) has lots if async server frameworks, but seems doubtful you'd get that level of integration unless they target it.