This looks very similar to Flutter, I wouldn't be surprised if they took some ideas from that which is all well and good; UI construction needs a facelift.
I think if flutter can provide this kind of editor support and experience it would be indispensable for me!
Also I'm pretty sure the web would emulate this one pretty soon!
I am very interested in multi-platform Kotlin. I'm not sure how far it will get but on the surface I think it is more likely for Kotlin to work on iOS than Swift on Android.
> it is more likely for Kotlin to work on iOS than Swift on Android.
Who knows... With Chris Lattner at Google and Google adopting Swift for TensorFlow, I could well imagine Swift eventually working on Android (or something newer).