Can also confirm that the legion ilv50 gear remains :)
I was able to obtain trinket with level 1 Lumber Mill, just needed to get the lumber mill and then search around for the quest giver outside of garrison
I need to kill formless nightmare for the wrists he drops, but every time I see him he is level 40 and marked with a skull for my twink so loot never drops, were you able to loot him?