Personally, these features are not something I feel like I would constantly be missing. I don't constantly feel like I'm missing them after switching from JavaS

Personally, these features are not something I feel like I would constantly be missing. I don't constantly feel like I'm missing them after switching from JavaScript, at least for not having to call .stream(), context receivers (which Java provides with ScopedValue), or signatures for functions. I'll give you nullable types, though I personally don't struggle with null at all.