Surprised to see Dart as one of the top upvoted feature requests for the Internet Explorer Platform.

Here are the top 10: https://wpdev.uservoice.com/forums/257854-internet-explorer-...

  1.  Auto Update older IE Versions (Evergreen)
  2.  Object.observe()
  3.  WebRTC
  4.  ShadowDOM
  5.  Use Blink
  6.  Custom Elements
  7.  Asm.js
  8.  Dart
  9.  Template Element
  10. Picture Element