You can make timestamps clickable in replay comments by installing this userscript:https://github.com/CoeJoder/my-userscripts/blob/master/dlive_enable_timestamps.tamper.js

I'll have to totally agree on this!

only visible on hover or clicking is not a good option while streaming but in options to turn it on and off so that everyone can choose how cluttering a line of chat should be ;)

Each line of chat is already cluttered with multiple badges, subscriber titles, name, etc. But i have been wanting this feature too. Maybe the timestamp is only visible on hover or click/long press along with other stuff on popup menu? This is crucial to add IMO. If someone comments between broadcasts there's no way to know how long ago the comment was written... 1 hour ago, yesterday, a week ago?

definitivevly nice to have