For me, collapsible threads are very useful for easily scrolling through long discussions. They are especially valuable on mobile where the page is longer and it is not so easy visually follow the thread hierarchy.
In fact I like them so much that a few months ago I implemented them in Gossip, struggling a bit with Rust :)
In the future we will have more users and therefore more complex discussions, their usefulness should increase.
I think the current Coracle user interface can be improved; in the design I'm working on, the switch has been moved to the left, attaching it to the line connecting parents and children, to make the goal obvious, and has been made a little larger to make it easier to click.
But I need to review it further, because this design does not work well with 2nd+ levels.
An important note: to be really useful the collapsible action should work on the parent note too, hiding it. This way you can actually "mute" the whole sub-thread.
For this reason I'm also tempted to move the action to the top of the note, I need to think more about this.

Ahh, that's what that button is for π
Okay, it's not that obvious yet haha π
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