Additional policy questions for Logs

As part of https://groups.google.com/a/chromium.org/d/msg/ct-policy/C3egwJb8Bp4/myrWhXQtAwAJ , it was suggested that there should be additional questions related to Logs' operational policies that would offer greater transparency for the community.

While that discussions included a number of questions to be refined, in that set, a few stand-out as immediately applicable:
1) What requirements the Log operator has, if any, for including a Root
2) What fees, if any, are required for including a Root
3) What policies exist for the acceptance/rejection of certificates (such as https://github.com/GoogleChrome/ct-policy/issues/3 )
4) The circumstances, process, and policies for removing a Root