As long as the "toast" section is reused for many different messages, I don't get the problem? Ideally, you'd embrace that there is a common spot to see informational items. Even more ideally, you'd have a way to view all of the notifications that have been shown. (Emacs user entering the conversation...)

I confess I was completely at a loss as to what a Toast was, though. I suppose we went with that name because they pop up?