I agree that it's a pretty clean language, but it still has oddities. For example, where in your linked spec does it address why the following trips a compile error?

    func foo(b bool) {
        if b {
            return
        } else {
            return
        }
    }

    func bar(b bool) int {
        if b {
            return 100
        } else {
            return 200
        }
    }

    func baz(b bool) int {
        if b {
            return 100
        }
        return 200
    }

    func qux(b bool) int {
        if b {
            return 100
        } else {
            return 200
        }
        panic("?")
    }

    // Error: function [bar] ends without a return statement