In a family table, when you suppress an item (feature or component) in an instance - anything that references this will also be suppressed.
It would be useful to have a warning, or at least visibility of the other items affected.
Example: we have a complex assembly with many inter-related components - and an instance had 4 out of 40 missing. We puzzled over this for a while until PTC Tech support found it was due to a reference to a suppressed component higher in the tree. If we had a warning, we could have spotted it much earlier!
