I'd like to see the ability to make a group within the Private Messaging function so that if we want to speak to a limited cohort we could without adding names each time. Of course we're essentially limited to 100 things of all types so this makes even more sense to me.
This was showing how a single message can be sent to multiple recipients simply by choosing multiple MRI names. I went "overboard" explaining how you can also group members and then choose from a customized group (last screen shot). More than likely, you are going to send a message to folks you are following which is "auto-grouped" per se simply by flagging them as being followed.