Button to toggle all discussions in a Merge Request

In the Discussion tab of Merge Requests, there's a "Toggle Discussion" button for each thread, which obviously shows or hides it.

Every once in a while a Merge Request ends up being longer than I want and I end up with many of these, a lot of them outdated.

1. we could find a way to hide irrelevant threads (e.g. threads started on a code change which has been modified in a later commit), like GitHub does, or
2. we could have a "Toggle All Discussions" button, given that most times I only need the very last messages...