Ok. The trailer was meh and the reviews have been similar, and my expectations were low.
But I thoroughly enjoyed that first episode and it felt very true GoT-ish in a good way to me. I'm really excited to see how the story evolves.
I think I really missed this world.
The armor/costumes are way more in line with the books/reality than anything we saw after season 2, so that's a plus.
Spoiler!
Also have to give HBO props to them having a morningstar absolutely demolish Daemon's shield. Shit like that just didn't happen in GOT after season 3. There's clearly a much heavier GRRM influence (from the design to using lines from "The Princess and the Queen".)
Would have preferred there was more ambiguity about Daemon and the "heir for a day", but they did a decent job there.