What features in particular? The most common one we hear is search, which is actually implemented and undergoing internal testing before a public preview soon.
It's just what I mentioned. I'll get a notification, and I just can't find where I was notified from. Like on Android, if I click on the notification I would expect it to take me to where the conversation happened where I was notified. It would take a really long time of scrolling to try and find the notification given the volume of discussion that happens. Can I just like click on something to see all my notifications from android, click on them and go to the conversation?