The most interesting characters in the game tend to be major characters in the show/book and I immediately know nothing can happen to them that I don't know about in this spin off piece of media.
When this was announced initially, I was super excited because I though Telltale would simply utilise the literally thousands of years of history in the Song of Ice and Fire universe to create something actually engaging. Instead they decided to do this Rosencrantz and Guildernstern are Dead thing that is just falling flat for me.
Like, I get why they did it. You'd be crazy not to make a Game of Thrones game and slap Jon Snow and Tyrion Lannister all over it, but it's still disappointing as hell to me.