If I were and atty, I would want the transcripts because
a) they were claimed to be used to substantiate the complaint to SS, and
b) what Kirby transcribed can be compared to the tapes the do have. I would want to see if there were things on the transcriptions which hadn’t been turned over to the courts. If so, it would be an investigative boon towards holding LK/fam in contempt for not handing over all the documents.
I think Deninger et al think very strongly that LK is hiding recordings, beit audio or video. Now KK shows up online with an elaborate discussion about the quantity of recordings she has not only heard but transcribed (all of them) and investigating whether they are accurate, and if not, how were they used to defame MB, or whether they represent tapes that have been hidden, will be alot of evidence for alot of stuff.