Implement a fallback system for CAS items

It would be really useful if there was a fallback system for CAS items like there is for build and buy items as in substitute a non available CAS item a sim wears, which is not in the game anymore. And I don't mean the "FallbackPart" thingy which is doing nothing when a CAS item wents missing. You only get the notification that an object was deleted when going into live mode. What I wish would happens instead, when e.g. I do not own a limited event item a Gallery sim is wearing, that 1. the Gallery please show me what exactly I am missing and 2. that it interchanges this missing item with a base game item.

I am annoyed that I often not know what exactly a sim is missing, besides the funny green Gallery icon in the upper left corner, but not telling me what exactly is missing. And I am annoyed even more by the game not substituting missing items with base game items.

Please consider implementing a fallback system for CAS items just like the already available fallback system for build and buy items. Thank you.