We currently have a larger group setup for all of our support staff. Because of the amount of noise in that chat, many people turn off notifications, and users know if they want someone's attention to @mention them. That works fine.
The feature request comes when I want to mention a smaller subset of people who are all members of another team. So for example, I have a team called All Support and there are 30 people in that team. I have another team called Level 1, Level 2, and Team Leads. All 30 people are also members of the appropriate teams listed above (Level 1, Level 2, etc).
What we would like to be able to do is @Level 1 inside of All Support, so that all the members of the team Level 1 would get a notification, rather than having to @ each member of Level 1. Currently you CAN @Level 1, but it just creates a Hyperlink to the Level 1 Team chat. It does not change All Support to orange, and therefore the team (CAN) misses that notification.