Yes I would mind, but only because I stopped maintaining a list when I stopped working for a browser vendor (Mozilla) and an organization that has an intercepting proxy as a part of it's core product(OpenDNS).

It's not a hard experiment to run, and "mainstream" has different meanings in different locations. Get a femto cell or other remote access point set up an open wireless network in a high traffic area, especially in a place where there is a transit hub, and hang out for several hours.

You could also grab the Alexa top 1 million or Cisco Umbrella top 1 million, and scan them for http endpoints, and work backward from there for sites that don't bounce you to a TLS endpoint.