Game Of Thrones: 8 Reasons Why The Blackfyre Rebellion Would Make A Perfect Prequel

2. Lots Of Family And Political Intrigue

This isn't The War of the Five Kings, which pitted various Great Houses against one another, nor even a conflict between just two rival houses, but a Civil War that splits a family - and the rest of the Seven Kingdoms - right down the middle. There's massive potential just in the broad strokes of a Westerosi Civil War, and even more when you get into the minutiae of the family and political drama.

It all begins with a king legitimising bastards on his deathbed, and from there you've got two main feuds running throughout: Daeron vs Daemon, and Brynden vs Aegor.

Tensions started to ramp up when pacts were made with the Dornish, turning them from enemies to allies, and those seeds continued to grow - it was made worse by the fact Daemon was in love with Daenerys, and supposedly she with him, and she was then married off to Dorne. There's scheming before war actually breaks out, various factions formed, and as many political fights as bloody battles.

The strong rivalry between Bloodraven and Bittersteel, both of whom were in love with their sister Shiera, would be a particularly fascinating subplot; you'd have sides of anti-heroes rather than clear good vs bad conflict; and the chance to see a great yet twisted house being torn apart, and taking the Kingdoms with them.