After further exploration, we settled on using 3D stock assets as a base to build our world. Still, we had to keep costs down where possible and so we came up with fairly flexible rules for assetts, that could be either 2D drawn (eg small characters props), stock photos or 3D model (eg character Alt Modes, Backgrounds etc). All in all it a fairly fluid and reliable process. Below a selection of style frames, test renders and production notes.