Interesting.
I would also like to use kotlin for AI and deep learning.
The current work on Jetbrains kotlin native is an opportunity for the use cases you are describing. It would allow to use it on environments without JVM.
I’m not sure of the interest of targeting Python source code or byte code. Kotlin, with java ecosystem and great features like coroutines, should be enough to bring people to build or port some library code on it.
What do you think about deeplearning4j?