Term specific featured post on taxonomy archive pages

The way to go would be to create an archive template for your taxonomy.
Then you can catch the term requested with a function like get_queried_object().
So now you can do a custom WP_Query querying for both your term and your meta ‘featured’

Hope that makes sense

http://codex.wordpress.org/Class_Reference/WP_Query
http://codex.wordpress.org/Template_Hierarchy#Custom_Taxonomies_display