First, I didn't know I could resurrect a thread this old. Second, I just started reading Star Trek Lives. I do find it interesting considering when it was written, and what has happened to Trek since the 1970s. I read Prometheus Design, and hated it, but so far, this is much better. Perhaps the influence of the other two authors is really helping.
The impression I got is ROddenberry really liked Myrna Culbreath, so maybe that's part of the reason why she had Trek books published in the past, but not recently?