Something like a watermark (doesn't necessarily have to be visible to people) and a tool to detect that watermark might be nice for example. Or alternatively we could stop developing this hell technology and try to automate something that isn't cultural expression.

Both of those are included and mentioned in the linked article.

Two things I would like - advances in detectors or generative content that do not do c2pa, and more transparency in what the usage policy means in practice.

Two things I would like - algorithmic disgorgement and an apology to the human race.