Those on LWOP are minimal. Maybe a dozen or so. There is fat in most, if not all, ranks. With 14 A320's replacing 15 B733's over next 6 years and 5 B773's replacing about 6(effective operating) B744's over next 2.5 years and efficiencies with less fleet types I would think it will be a while before anyone is taken on. Retirements are an unknown but also minimal.