The show went downhill the moment it had no more books to follow. It needed like 3 more season to earn the plot twists that came this season. Danny losing it should have been an entire season not three seconds. How could Danny let her guard down near Jon? As my favorite YouTuber said, everything Danny did and said in this episode was a request to simply kill her.
We also know what is west of Westeros. Arya is not the first to try and discover what is out there. Most never returned, those who do, come back sick and insane so it can't be anything good.
This entire season just felt rushed to me.