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The present status of the LHC anomalies found in exclusive semileptonic $b\tos\ell^+\ell^-$ decays is discussed with special emphasis on the exclusive4-body angular distribution $B \to K^*(\to K\pi)\ell^+\ell^-$. The treatment ofhadronic uncertainties in this mode is briefly reviewed, and some of theanalyses in the literature are critically reassessed. The global pictureprovided by the global fit points to a coherent pattern of deviations with asignificance substantially above 4$\sigma$ for different New Physics scenarios.Finally, we propose as the next step in the field to focus on the study ofoptimized observables that compare electron and muon modes, sensitive tolepton-flavour universality violations and free from hadronic uncertainties(including charm) in the SM, the so called $Q_i$ observables.

$B \to K^*(\to K\pi) \ell^+\ell^-$ theory and the global picture: What's next?