  We discuss the interpretation of path integral optimization as a
uniformization problem in even dimensions. This perspective allows for a
systematical construction of the higher-dimensional path integral complexity in
holographic conformal field theories in terms of Q-curvature actions. We
explore the properties and consequences of these actions from the perspective
of the optimization programme, tensor networks and penalty factors. Moreover,
in the context of recently proposed holographic path integral optimization, we
consider higher curvature contributions on the Hartle-Hawking bulk slice and
study their impact on the optimization as well as their relation to Q-curvature
actions and finite cut-off holography.
