What we want from a Game of Thrones prequel

With Game of Thrones now heading for its final two short seasons, HBO is deeply invested in how to follow up the biggest show in its stable. Variety reported two weeks ago that the network had tapped four writers to work on follow-ups to the acclaimed series, setting the fandom alight with theories about what parts of George R.R. Martin’s backstory to his A Song of Ice and Fire series could conceivably make it to the screen. Could there be a series about Robert’s Rebellion, the war t