John D McMaster seems to have previously done 100x scans for some chips if I'm reading the site right e.g. the latest has a link for 20x and 100x https://siliconpr0n.org/map/generalplus/gplb52a24a-049a/. Is it as simple as seeing if he'll rescan the PPUs at 100x or are these not the quality that I was thinking?
He has a tremendous backlog of work to do at the moment.
I would prefer to not bother him unless it was a last resort, but that is indeed an option if my breadboard idea does not work out and no others are up to the task of decapping the PPUs.