I agree. The media feeding frenzy of speculation around the Taylors, or even the Meyers or any others like those in the pub being called as State witnesses was just another case of scandalmongering by the press that will stoop as low as it gets to attract readers, viewers, book buyers or whatever.
IMO, if after Kim Martin's thoughtful, measured, and extremely poignant testimony Nel had called Sam and her mother, (imo two harpies from an excerpt of the book published online), it would have been grossly disrespectful to Reeva and her family, especially to Kim, June and Barry, and a really huge huge mistake on Nel's behalf.
Thankfully he is much more intelligent than that and I don't believe he ever planned to call any of them.