The next step after
DM-840 is to change all code that uses image-like getBBox and constructors that take an image origin argument to always specify the origin ( DM-840 will break any code that tries to use a default image origin).
This results in a working stack after
Neither this nor
DM-840 will be merged to master, though it can be used by HSC and other users as they transition to a default image origin of PARENT.
DM-1176 for the final step.