Ive resolved the Dr. Diamond question, for myself anyway.
When trial began, Dr. Diamond was still on the table to be called. By October 20. When Kilgore indicated to Staley his case would last just 5-6 days, Kilgore was uncertain if he would call Diamond, but probably had already lined up Brewer as a replacement if he chose not to call Diamond.
That Kilgore, after trial began, doesnt seem to have pursued the issue of having Dr. Diamond testify as to RHs statements without RH testifying himself suggests to me that Kilgore was already leaning towards not calling Diamond.
I dont believe that Kilgore would have advised RH to testify for any reason, even if it was the case RH had to testify to bring in Diamond, and that the DT thought Diamond essential.
IMO Kilgore concluded sometime between the State resting and after Brewers testimony that Diamonds testimony could harm RH more than it could assist, because the State could and would use Diamond, THE expert on FBS, to point how inconsistent the facts of RHs case were to other FBS cases.
Mystery solved, at least for me. At least until proven otherwise.