  We discuss a deformation of superspace based on a hermitian twist. The twist
implies a $\star$-product that is noncommutative, hermitian and finite when
expanded in power series of the deformation parameter. The Leibniz rule for the
twisted SUSY transformations is deformed. A minimal deformation of the
Wess-Zumino action is proposed and its renormalizability properties are
discussed. There is no tadpole contribution, but the two-point function
diverges. We speculate that the deformed Leibniz rule, or more generally the
twisted symmetry, interferes with renormalizability properties of the model. We
discuss different possibilities to render a renormalizable model.
