New active galactic nuclei science cases with interferometry: An
  incomplete preview
  Infrared (IR) interferometry has made widely recognised contributions to the
way we look at the dusty environment of supermassive black holes on parsec
scales. It finally provided direct evidence for orientation-dependent
unification of active galaxies, however it also showed that the classical
"torus" picture is oversimplified. New scientific opportunities for AGN have
been suggested, and will soon be carried out, focusing on the dynamical aspects
of spectrally and spatially resolved interferometry, as well as the potential
to employ interferometry for cosmology. This will open interferometry to new
scientific communities.
