Actually I think so. This guy uses planting families to make things scalable.
Scalable Family in Revit - Revit Family Tutorial (youtube.com)
I’m now thinking that I should identify all the instances that are mirrored or scaled, explode them all and load them in Revit as something else.
OR, at least for the mirroring, define a new family that is made with the mirrored geometry and replicate instances of it using the block instances transforms. But I need to understand how to find the mirrored instances and identify those with the same mirroring transformation (axis). 