And not less ideas that could improve usability of existing ones, like conditionals, loops and self-reference in object literals,

  {
    if (cond) set {a: 1},
    for (x of values) set {[x.name]: x},
    b: thisob.x,
    c: {d: thisob.c},
  }

enhanced data transfer,

  dest.{a, b, [key]} = src

default values,

  var x = arg ?? 1

optionality and mandatoryness,

  var x = f?(…)?.info![key] ?? "<not found>"

scope objects and flow control in these,

  function foo(a=1, b=2) {
    scope bar {
      let c = 3
      scope {
        let c = 4
        log(a, b, bar.c, c)
        baz(scope.this) // a, b, c, bar
        baz(scope.arguments) // a, b
        break bar

function environments,

  global.{*} = {a:1, b:2}
  var t = proxify({a:3, b:4}, global)
  withenv (t) foo() // 3 4

  function foo() {
    console.log(a, b)
  }

and so on. It seems everyone jumps on to “new same language” train when there is so much to do in what’s already not done.