I think a lot of people suggested a lot of good ideas (Dunk & Egg, Robert’s Rebellion, Blackfyres, Dance w/ Dragons, Original Nymeria, Aegon’s Conquest, etc.), so I actually think an anthology series would be perfect. Each season could tell about a different event in the history of Westeros (and Essos). It would allow fans to see all of the events they have heard about in passing without having to reuse the same actors meaning you could probably get some bigger people if they really wanted to. Also since stories can vary so much some season could be done cheaper given they wouldn’t have epic battles and then you can splurge on dragon fights.