Scala has excellent and ergonomic collections, good futures/promises, partial functions, very useful apply/unapply, scala.js, very much superior pattern matchin

Scala has excellent and ergonomic collections, good futures/promises, partial functions, very useful apply/unapply, scala.js, very much superior pattern matching, a much richer type system... I've used both Scala and Kotlin, and will choose Scala every time unless there's a compelling need to lower the bar, to the extent that Kotlin is less likely to get new programmers into the weeds.