There have been a few discussions on this, notably here:
mainly discussing whether or not there is a requirement for Kotlin on .NET.
I’m more interested in a different angle: is it feasible?
In Saxon we have a product written in Java that is increasingly moving onto other platforms (.NET, JS, native) using a variety of technologies, and involving more code forking than we would like. If we could migrate our code to Kotlin and target all those four platforms it would be an enormous step forward. We’re not interested here in whether Kotlin can complete against other .NET-only languages; its unique-selling-point would be multi-platform targeting, and there’s really nothing else that can do that. We’re having to rethink our .NET strategy because of the demise of IKVM, and because IKVM never did and never will support .NET Core.
If we offered to fund the development, with the aim of releasing something as open source, would we find someone interested in doing it? If you think it can be done and you think it’s an interesting project, then let us know and we can talk about it.