Thanks, Garlin.
Did some simple testing on my end in the meantime, but no luck.
Took the official 23H2 image, extracted and imported into NTlite.
Queued latest windows updates. Applied to just the loaded version + wimre. No other changes.
Errors each time when reaching wimre.
No preset used.
Tried a reinstall, latest Beta, clearing temp folders and changing temp directories.
Unable to attach dism.log, almost 100mb in size.