The Iron Throne will melt
This is a bit of a reach, but bear with us. Season 7 ended with the Night King melting one of the biggest symbols of the series – the wall.
The only thing bigger? The Iron Throne. It’s the most iconic thing in the show, the ultimate target for several key characters, so wouldn’t it be a massive shock if it got destroyed by a zombie dragon?
The Night King will make it to King’s Landing, and he’ll melt the throne. We’re not sure if it’ll happen in the finale, but it will happen – with the consequences of this symbol of the monarchy being destroyed being felt in the penultimate scene, when our surviving heroes (Jon, Tyrion, Arya, Yara, possibly Sansa) agree to rule in a democratic coalition of leaders, instead of through one all-powerful King / Queen.