on the NTP (new tab page), most visited websites can be shown, with a small icon which is basically that website's favicon and the website/web page title.
My Suggestion is to Turn those Tiles into Live Tiles.
so instead of showing a static Icon and title, show the contents of that web page.
the contents can be divided into 4 or 5 slides that are the size of the whole Tile and change every 3-4 seconds automatically like a slide show.
they can be very useful and serve as a quick sneak peak or preview into those most visited websites, so user can look at them and check for new content.
these previews can be loaded when Edge is launched and reloaded when the user refreshes the new tab page.
there needs to be a minimum period between each manual reload of these contents to prevent sending spam-looking requests to those websites (when a user decides to spam the refresh button on NTP). the minimum period can be set to something like 20 seconds and not less.
this will be a great addition to the new Edge browser. dynamically generated contents are always better than static content.