  A geometrical analysis of the bulk and anti-de Sitter boundary unitarity
conditions of 3D "Minimal Massive Gravity" (MMG) (which evades the
"bulk/boundary clash" of Topologically Massive Gravity) is used to extend and
simplify previous results, showing that unitarity selects, up to equivalence, a
connected region in parameter space. We also initiate the study of flat-space
holography for MMG. Its relevant flat space limit is a deformation of 3D
conformal gravity; the deformation is both non-linear and non-conformal,
implying a linearisation instability.
