The current eDrawings reads STEP files and is simple! I have a STEP file for an embedded product (10 top-level product, 60 parts each in a 5-deep hierarchy with re-use of major electronics sub-assemblies). I'm reviewing the design and stepping through the hierarchy. How best to select and hide, or hide others, took some getting used to (and I still don't seem to understand correctly). You can also apparently markup a drawing (possibly to send back to the designer for another iteration) but I haven't tried.
First time poster, long time listener (thanks Dave!).
Dale