Its difficult to find all data references and very easy to break something when there is a cell conflict. It would really help if you could click on a data cell and see where the data is coming from. Might be tough to do this with Player scripts but if you add Player data visibility in a future Moxie release, this should be a design consideration.
You could extend this to look at DataPipe sources but that would require a lot of integration with DataPipe Server to trace the source, which is becoming less of an issue as scripting replaces many linking products.