Ah yes - Emily Bishop and Leslie Philips separated at birth.
Someone once suggested bringing back Spider (Emily's nephew) so as to give Emily more of a role but why should her role revolve around her nephew?
I don't think we'd see as much of Rita were it not for her double act with Norris. As for Betty surely now (with the Rovers being so short-staffed (with no Lauren, no Michelle and no Vernon (for what use he was behind the bar!)), would be the ideal time to re-recruit her?