A small change to add_rewrite_rule() in [34708] means that in the upcoming WordPress 4.4 an array can be passed as the second parameter instead of a query string.
Previously:
add_rewrite_rule( 'foo/([^/]+)/bar/([^/]+)/?$', 'index.php?post_type=foo&name=$matches[1]&taxonomy=bar&term=$matches[2]' );
Now:
add_rewrite_rule( 'foo/([^/]+)/bar/([^/]+)/?$', array( 'post_type' => 'foo', 'name' => '$matches[1]', 'taxonomy' => 'bar', 'term' => '$matches[2]', ) );
While this isn’t the biggest change in the world, it makes this parameter much easier on the eyes.
(Note that your $matches variables need to remain in single quotes!)