How to change “Draft” string for status of custom post type to “Unavailable”?

I was investigating the issue for this question, and one option is using the plugin Edit Flow.

It can be configured to display custom post_status in specific CPT’s, but further tests are necessary to see if it applies to this case.

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Other option is using toscho’s Retranslate plugin, where you can define the string to be translated and the post_type: https://wordpress.stackexchange.com/a/3675/12615

It gets almost all the job done, because, curiously, there’s one string ^{(the very first one of the screenshot)} that don’t gets translated and one extra code is necessary:

add_filter( 'views_edit-employee', 'wpse_54330_custom_draft_translation', 10, 1);

function wpse_54330_custom_draft_translation( $views ) 
{
    $views['draft'] = str_replace('Draft', 'Unavailable', $views['draft']);
    return $views;
}

One caveat of this method is that just after “quick editing” the post status, the word Draft appears…