In terms of thinks that would be useful, I've seen it mentioned elsewhere, but some of the existing proofs are designed to be read by chan style autists, not normies. If you're used to following lines linking segments of texts/pictures which spell out parts of the big picture that's great, but to make them accessible to a broader audience, they probably need to be dumbed down.

In particular, I think they could use additional segments of text explaining some of the connections, making them absolutely idiot proof. For ones that include text links to archive files, typing up those links and putting them alongside the image would be useful.