  Motivated by the recent experimental progress on the $B$-meson decay
anomalies (in particular the angular observables in $B\to K^\ast\mu\mu$), we
rely on a simplified-model approach to study the prospects of vector
leptoquarks in what concerns numerous flavour observables, identifying several
promising decay modes which would allow to (indirectly) probe such an
extension. Our findings suggest that the confirmation of the $B$-meson decay
anomalies, in parallel with positive signals (at Belle II or LHCb) for $\tau\to
\phi \mu$, $B_{(s)}$-meson decays to $\tau^+ \tau^-$ and $\tau^+ \mu^-$
($\tau^+ e^-$) final states, as well as an observation of certain charged
lepton flavour violation decays (at COMET or Mu2e), would contribute to
strengthen the case for this scenario. We also illustrate how the evolution of
the experimental determination of $R_{D^{(*)}}$ could be instrumental in
falsifying an explanation of the anomalous $B$-meson decay data via a vector
$V_1$ leptoquark.
