I am happy to make the high-res scans available. The low quality needed to observe the 10MB max on WikiTree was something that Peter and I discussed but had to accept as a fact of life. I have been drawing extensively on archive.org for historical material in tracing out my own genealogy so it only seems right to give something back.
There are 68 individual diary page scans, each about 3 to 5 MB. Unfortunately, because I was wary of damaging the binding, most of the even-numbered pages are somewhat out of focus in the top left. Also, because I was trying to minimize overall file size, I cropped the pages to different sizes depending on the amount of text they contain. I still have the uncropped files, so I can go back and re-crop the pages to a standard size, but there's not much I can do about the focus.
Peter and I have an Excel file that contains the transcripted litigant names and court dates indexed to the image files and pdf page numbers, and we are happy to make that available as well, though apparently we can't upload it to WikiTree. We did not do a verbatim transcript of the diary as most of the entries follow exactly the same format (as described on the free space page).