My experience with Swift was that there was a section of the language API that I used heavily, then I had features I would use every now and then, and others I

My experience with Swift was that there was a section of the language API that I used heavily, then I had features I would use every now and then, and others I would use almost never (like keypaths). I think one of the advantages of a multi-paradigm language is that you have the freedom to carve out a sub-language which is appropriate for a given problem or for your personal taste. That said, I think Swift does sometimes feel like it's missing a metaprogramming system. Like property wrappers and function builders could probably be generated by a sufficiently powerful macro system, but instead they exist as one-off features with significant complexity.