...I think the novel still uses of older version of Data's origin rather than the one we eventually saw on-screen (and which was a lot more interesting, too).
I think so, yes. And that origin -- like Data himself -- was basically a resurrection of Roddenberry's failed
The Questor Tapes pilot. Questor was an android built by mysterious aliens, and Data was originally supposed to be the same, although the motives for his creation were different (preserving the memories of doomed colonists, whereas Questor's original mission was basically the same as Gary Seven's -- Roddenberry was a master of recycling).[/QUOTE]
All true, and as I said, I think exploring that kind of origin could have been a lot more interesting than the origin we did get in
Datalore, complete with an Evil Twin (

)plot-line that ended up getting way too much air-time, IMO.
The potential stories with having one of your major crew members being an artificat of an unknown alien race are very intriguing to say the least. Instead we get hid "dad", and his "brother", and his "child", and his "mother", ad nauseum.
You are also dead-on about David Gerrold who, IMO, deserves a lot more credit and recognition concerning TNG than he has received.