Kotlin works very well on Android Studio and Intellij Idea, I love Kotlin, however the use in IDEs like Eclipse, NetBeans and Editors like VS Code and Atom is very very bad, does Jet Brains work on offering better Support for this platform? Will we have Kotlin in use in Scene Builder, Window Builder? Thanks.
JB is not interested in supporting other IDEs, as does not have a direct income from Kotlin, only indirect benefits, including the sale of their own IDE.
Compiler core modules are undocumented, mostly tied to JVM, and too complicated overall for simple reuse in other IDE integrations.
Community alone (without any commercial support) cannot do high quality integration, IMO.