You know when people are typing? It shows those 3 dots by their profile picture... I'm thinking a version of that, but it shows up blue for when someone in the server is messaging you.
This is pretty cool actually - I can't easily keep track of messages that are being written in a DM *and* on a Server at the same time. So being able to get a heads up would be epic0
This could help me a lot as I work as support for some services and provide faster support to customers.1