i think arya's dead, 'cause if anything will make jon mad enough to kill dany...https://twitter.com/hbdchick/status/1128276831025680384?s=21 …
Obviously you've read the leaks but this makes zero sense - the Night's Watch doesn't exist. They're there to guard the Wall, the Wall fell. They protect the realm from the White Walkers but those aren't a threat any more. They all got killed at Winterfell, there's no commander.