Current problem
If I'm scrolling around in a channel looking for a thread it can be easy to miss messages from which threads were created. Just using the threads list UI for this can be cumbersome depending on the context.
Proposed change
Add some sort of visual indicator that runs along the bottom left and bottom edges of the message from the sender's portrait to the thread's embedded thingy. Or something similar at least.
Platform
macOS, Windows, Linux, Web, Android, iOS
Additional information
Discord does this, example attached.