Why not switch to agent portal?

You can also make this option only appear for agents with this script:

Add this to the bottom of the Header (Customize support portal> Header)

<script>
  var UserIsAgent = JSON.stringify(USER_INFO.is_agent);
  if(UserIsAgent == "true") {
			jQuery("#user-dropdown").append('<a href="/helpdesk" role="menuitem" aria-controls="page-main">Agent Portal</a>');
  }

</script>

Nice little work around for if/when this becomes an actual feature.