Has there been any progress on this? It's especially an issue when you copy and paste from a different file even though all the assets are the same.
Not just linked files like images, but being able to consolidate multiple copies of Symbols would be really useful. Or at least being able to change the source of a layer. After Effects has convenient options for "Remove Unused" or "Consolidate Footage".
As a side note, It would be great to be able to drag and drop a scenes or layout from one Hype Document into another rather than having to make a new layout one and copy the layers over manually. You can "Duplicate Scene" but not "Duplicate Layout" Dragging layouts into a different scene could be very helpful too. For those of us using different layouts for ads instead of for responsive it would be really handy if Hype would let us have more than one layout with the same breakpoint. Right now you have to choose a different size then go back into the properties and change it back to the correct width after.