I agree. That could scare any author. Especially with the spoilers of the showrunners giving away your major plot beats.

I don’t think there’s anything that’s unsalvageable about those major plot beats, they just have to be earned, which the showrunner is completely didn’t do. But I think you could make each beat make sense, with time, structure, and motivation, most importantly the motivation. Which GRRM is famous for doing, so I have every confidence in him