Its feature set is fantastic. For me there are a couple of changes that would make it my daily driver:
1) a quicker way to dismiss notification count
2) ability to turn off notifications for reactions
3) manual pull down to refresh home feed
4) navigation buttons at the bottom need to always return you to the primary view for that button.
#4 is the biggest one for me. For instance, if I’m on the notifications tab and I tap on a post to view it, when I tap the notification button again it should return me back to the notifications screen. Same with home button. Search button.