No reason why the future WSOs couldn't come from the WSOp cadre, it would also provide something to aim for instead of promotion blight after FS. A few years of sensor and tactics experience before moving to the capacity sapping seat would be very useful. It always seemed wrong to me that we put new baby Navs in the Tac Nav seat and wondered why they struggled, especially when many WSOp leads knew exactly what was required as they had the capacity and experience.