Thank you for the patience with us on this. This has been one of the most popular ideas on UserVoice and we definitely heard your feedback.
Today we launched /announcement for mods and streamers. Announcements can be used in chat to highlight a message and are available in 4 different colors along with the channel accent color. Because this is only part of the ask of this idea we are setting this idea to partial release so the community can continue to leave feedback on this.
An error occurred while saving the commentArtfulAnya commented
Taking away such a useful feature without any warning is such a terrible idea. Worse is that you replaced it with something far less useful for streamers. I used the /me command to make sure important channel messages were seen, and there was never any misuse of the command in my channel.