Threads should be breakoff conversations like Slack. The current way threads are handled are horrendous to manage. Still notify on thread replies but they should stay where the thread started in the context of the conversation.
Timothy Carroll commented
I don't understand how this doesn't have 10,000+ upvotes. Threaded conversations are dead simple and intuitive in Slack. The way Teams handles conversations is simply unintuitive, difficult to explain, and hard to keep up with.