I apologize for my post to you as it was made in haste and didn't come out right.
I believe your findings in the data stream 100%. I would find it idiotic of Rovi to develop a new guide and try using inserters at all to get data to them. If it was left up to me to develop a new guide to replace TVGOS, getting rid of the inserters would be number one on the list.
Rovi did end TVGOS and is replacing it with Total Guide. The only place you can find a reference to TVGOS...