The stakes are not nearly as high as GOT. Also, it's fairly redundant - Everybody wants to be the next king, including a blond Targaryen woman who also happens to ride a dragon. Gee, where have we seen this before?
Reminds of all of the hype before the third Star Wars came out - Return of the Jedi. And what was the plot? The rebels again had to blow up a Death Star.
One would think after how bad the GOT folks botched the final season that they would have something new to say in HOD.