It would be handy if we can create alert group within a team site. For example if my Team site has 20 people and I primarily communicate with 3 people about a specific subject, I could create an alert group with 4 of use, that can be used when discussing the subject, rather then having to put all there names in. The alert group should be usable by anyone in the team.
this become important, because most people get busy working and only check team when alerted to a conversation.
This is similar to the @channel feature but far more useful as that it doesn't require a user to favorite/unfavorite the channel to receive/stop receiving alerts.