I find myself wondering where a specific part is when building a MOC. Ideally rebrickable would be able to tell me the exact physical location of the part in my house.
That seems unfeasible, though.
However, it would be great to be able to see from which Lego model or loose parts list rebrickable has deduced that I have the part!
That would allow me to
1. deconstruct a MOC that I may currently have built which includes the part
2. look in the box of some of the models that are not built but the parts of which are not sorted in their usual place yet.