And Capaldi only got the Robin Hood ep. And the bit with the Xmas Armistice in his finale, but we knew the history of both well enough.
Capaldi also had the frost fair episode, "Thin Ice."
Ryan should have stayed and moved LGBTQ rights forward by 5 hundred years.
It wouldn't have. It wasn't a secret in court that James VI/I liked the boys, and it was common knowledge which boys he liked. Adding Ryan into the mix wouldn't have changed a thing.
Although if Ryan taught the King elementary hygiene, then Jim is not going to die when he is supposed to die, and that knocks history off kilter...
I'm not sure that James living longer would have made a great deal of difference. The most signifcant difference would have been whether or not the Happy Parliament of 1625 voted to fund a war against Spain. Charles interpreted Parliament as having done so after his father's death, but Parliament saw it as much more ambiguous. The reality is that by the mid-1620s there were issues in England that James was unable, and in some cases unwilling, to solve -- the conflict between Puritan and High Church clerics over what the Church of England was, the growing power and influence of Parliament and how that related to James' philosophy of the Divine Right of Kings. Charles really wasn't prepared to solve these issues, either, because he was never supposed to be king. His elder brother, Henry Frederick, had been groomed for the throne from his birth, and his death from typhus in 1612 broke his father's spirit, and some historians believe that James's reign lost a lot of its vigor at that point.
My point is, if James lived, say, another five years, Charles is still going to inherit three kingdoms beset by myriad problems that he's ill-equipped to deal with. The Civil War was inevitable.