I didn't see your deleted comment but I assume it was something about the historical inaccuracy of colour blind casting.
I completely agree with you on that. I heard an interview with the director Peter Kosminsky who said that they had cast the best actors, irrespective of race and it didn't matter at all, I think that's disingenuous.
I think it does matter, why bother trying to get historical accuracy with scenery, costumes etc if what things look like is irrelevant. If certain historically important white people had actually been mixed race or black at that time, which they would not have been, they certainly would not be members of the aristocracy and their lives would have run a completely different course. It's ridiculous to pretend that no one sees the colour of an actor, of course they do!
If wolf hall was a modern production, done in modern dress, henry VIII acted by a woman and taking place in a 3 bed semi instead of palaces, then it would be fine to use actors of colour because historical accuracy would then be irrelevant. But it isn't, therefore black actors playing white people is inappropriate in this particular production, and draws them to your attention in an unnecessary way which jars.
I have loved all the series.