I would like to summarize your view.
Consider this, the only PII stuff the CT have shown, is a note stating JB was on the phone at around 3.37AM. This was no secret anyway as JB was on the phone for around 10-15 minutes. If that's all they have worth showing then I wont get my hopes up.
The claim that there is a WS from Mrs Boutflour stating RWB never told her that JB told him he could murder his family, (which is a rather stunning thing not to tell your wife when the whole family ends up dead). Is interesting. However -
I expect the conspiracy theorists looking for a police conspiracy will be rather disappointed once the PII stuff is looked at critically.
If you want a summary of my view of what happened in 1985/86, that will take a while to type up.