[SPOILERS] In the books, there was a character called Jon Connington, and he was the one who rescued Tyrion from drowning and became infected with greyscale. Are they dropping the entire Jon Connington storyline with Young Griff? [/SPOILERS]
I’m guessing so, although I think the ‘Mummer’s Dragon’ storyline is all a ruse anyway. A Plan B by Varys and Illyrio in case their Plan A didn’t work out.