Regardless of the future plot, let's assume that the Doctor successfully finds the reborn Master and Jenny on a certain planet. From then on, Tadis had to travel with two time lords who were not very harmonious and a time lord's genetic product. Likewise, ignore the damn plot and assume none of the lovable members of Torchwood ever died. This way, if the Doctor wants to, he can take his family to visit Torchwood and have a cozy outing or something.