Yeah, both he and Mark Addy were pretty well known...but they died. And, they were in season 1, which may have needed a name or two just to get some eyes on the program. Not spoiling anything...but at this point moving forward, regardless of length of stay, I still think they are better served with lesser knowns. They have been remarkable at casting characters like both Mormonts, who were not exactly what I visualized, yet they own the roles. Jaqen Hr'qar was another one as well as the Brother of the watch who spirited whatshername out. West carries too much baggage i.m.o.. The only casting so far that didn't feel right was Quorin Halfhand, I envisioned a much bigger bear of a man, but it was a minor complaint.