Need Token Help for System Message Template
A.1 


in my 4.7.x test the dropdown arrow to the right of  works to show me the tokens, but does not result in them being inserted. In my 4.6 test this did work (which suggests a JIRA issue might be needed for 4.7 but can't test on dmaster as the drupal permission has not been assigned)
in my 4.6.x test the dropdown arrow to the right of  works to show me the tokens, and does result in them being inserted.


A.2 address type tokens are {contact.country} and {contact.street_address}

A.3 I don't see any membership based tokens listed. I believe we - Fuzion = did an Extension that can help with this - try this one

A.4 I don't know and am not sure what you are referencing.

A.5 In the 4.6.x it shows as full width and has a handle in bottom-left corner to drag it bigger. In my 4.7.x test it only shows as half-width but still has the handle. Guess if you are missing the handle you may need to check for js errors or something else like a WP theme issue??

Hope that helps you a bit.