The polarization orientation effect and porosity effect on the piezoelectric properties and related parameters are studied in 2–2-type composites based on domain-engineered relaxor-ferroelectric [011]-poled single crystals. The parameters, which are of great interest, are an anisotropy of the piezoelectric coefficients $d_{3j}^{*}$, an anisotropy of the energy-harvesting figures of merit $d_{3j}^{*}{g}_{3j}^{*}$ and the hydrostatic piezoelectric coefficient . An orientation of the main crystallographic axes in each polydomain single-crystal layer is described by angles $\beta$ and $\gamma$. Diagrams built for the first time show the ($\beta ,\gamma$) regions, where a large anisotropy of $d_{3j}^{*}$ (or $d_{3j}^{*}{g}_{3j}^{*}$) is achieved, and where inequality 1000 pC/N holds. A large local max = 1930 pC/N is achieved in a 2–2–0 PZN–0.065PT-based composite at the longitudinal piezoelectric coefficient = 2290 pC/N and figure of merit $d_{33}^{*}{g}_{33}^{*}$ = 1.02${}^{.}$10${}^{-9}$ Pa${}^{-1}$. The aforementioned large parameters are to be of value in piezoelectric sensing, energy harvesting and hydroacoustics.