I don't know if people already suggested this, but a button where you can "subscribe/unsubscribe" to a thread would be very nice. And the subscribe button could automatically turn on if you comment on a post, so you get notified if there are replies to a post you didnt make.

I think it would be very helpful because I was surprised i didnt get notifs for stuff i replied to, and i have to search thru the forum to try to find the places i talked to in order to find replies. I think this feature would be useful to help continue conversations