Hello,
Well said Rob, I am currently reviewing the options available for us to move forward and I am taking a look in to the Parcel Fabric as well as the other option you spoke of, exporting the parcels in to plan-specific geodatabases, doing the editing there, and re-importing in to the fabric exactly because of the possible issues you brought up. This is the process others I have spoken to have taken as well. I would like to hear from some people that have successfully implemented the Parcel Fabric, especially those that have been able to do it with minimal technical support from ESRI. I am particularly concerned over the "gap" of 100cm and having to change a registry key to change it.
Will keep looking in on this discussion and will try to add what I can.
Amir, I took Rob's post to say that he is NOT moving forward with the Parcel Fabric...but rather reverting back to editing coverages.