Am I the only one here who thought B4 worked? I mean, it went along well with the theme and also it makes sense that Soong would have had a more primitive prototype android rather than be able to create someone as advanced as Lore on the first attempt.
As I suggested up thread, as a theme-aid Lore still works better. Plus he would have been a link to the show. But even had they used Lore, the connectivity still wouldn't have been strong or integral enough to warrant the subplot. It was just that superfluous.