  $\tau$ is playing an important role in the current B-physics indications from
experiments of lepton flavor universality violations(LFUV). This suggests it be
given increasing attention theoretically in the coming years, given also the
fact that Belle-II will have much larger data samples to study; similar
comments also apply to LHCb as well as ATLAS and CMS. The fact that $\tau$
decays provide valuable information on its spin is an added advantage. This
gains special significance if the current indications of new physics are upheld
since naturalness arguments then strongly suggest that new physics should be
accompanied by new CP-odd phase(s). Moreover, the fact that the $\tau$ mass is
around 1.8 GeV,~{\it i.e} a lot less than the B-meson mass makes it much easier
candidate for lattice studies in great detail and consequently very likely with
greater precision. This should help us test the SM and or BSMs with greater
precision as needed.
