This makes following a conversation much easier, especially in long threads with many participants.
It's a major usability improvement, and makes Mastodon much easier to use.
https://mastodon.social has comment threading right now, and only on the native web. This feature should be available on other servers and clients with a future update.
See screenshot as an example.
How do you feel about the addition of this feature?
It was getting continuously hammered by new registration requests. And 20 people managed to register during an hour when most people weren't even able to log in.
So now @kainoa will do some additional work to enable more scale, and we'll re-open registrations in the future.