Feature suggestion (scrollbar)

Hii I had an idea for a discord feature. I always thought I could see the user on the opposite end of the chat scrolling down to the bottom of the screen. I tend to scroll down when theyre not responding and hit the bottom. Soo... I imagine a feature users can enable where you can see a ghost scrollbar(s) that's a dif color from your own. So u can see where the user is scrolling in the convo.