  We present a detailed analysis of the eclectic flavor structure of the
two-dimensional $\mathbb Z_2$ orbifold with its two unconstrained moduli $T$
and $U$ as well as $\mathrm{SL}(2,\mathbb Z)_T\times \mathrm{SL}(2,\mathbb
Z)_U$ modular symmetry. This provides a thorough understanding of mirror
symmetry as well as the $R$-symmetries that appear as a consequence of the
automorphy factors of modular transformations. It leads to a complete picture
of local flavor unification in the $(T,U)$ modulus landscape. In view of
applications towards the flavor structure of particle physics models, we are
led to top-down constructions with high predictive power. The first reason is
the very limited availability of flavor representations of twisted matter
fields as well as their (fixed) modular weights. This is followed by severe
restrictions from traditional and (finite) modular flavor symmetries, mirror
symmetry, CP and $R$-symmetries on the superpotential and Kaehler potential of
the theory.
