I'd really like to see:
 - CSS 3 Transforms &amp; Transitions.
 - An MEF style plugin framework.
 - Frequent Chrome-esque auto updating, or at least through Windows Update.
  - Updates would provide additional support for technologies like HTML5 &amp; CSS3, if
    it's there it works.

My questions would be:
 - What are the IE team's priorities?
 - Who are they targeting?
 - What restrictions are imposed on them from above?