Oh, there is a lot of material there that could lead to a recurring appearance: the Gunpowder Plot, the rise of the witchcraft trials, his proposal of an absolutist theory of monarchy. My personal favourite would be a story about the Statutes of Iona, and the campaign to eradicate the Gaelic language, which was opposed by the Earl of Orkney, Patrick Stewart (who James imprisoned), and who could be played by…Patrick Stewart!
It is possible that the James ! & VIth story deals with witchcraft and the supernatural forces of the Daemonologie. Whatever aspect of his rule is the focus of the story it sounds promising. I love history stories and the period is an interesting one.