How do I use a different node template on taxonomy term node listing pages?
This answer had two parts:


As detailed in my Update #1, you have to put your suggestion last in the theme_hook_suggestions array, as last is highest priority.
Your template files must be named with two dashes, not one.


File system: 


  node--taxonomy.tpl.php


As added to theme_hook_suggestions array:


  node__taxonomy