Hiya!
I'd like to put on the request list the addition of a "speak..." action field for an overall list of actions that can be used to speak an announcement when it doesn't make sense to attach an announcement to a specific item in a list of actions.
Alternately, perhaps "speak message" or "play sound" could become a notification action (in addition to "send email" that seems to be the only notification action available now) one could add to a list apart from other actions?
Hopefully simple and helpful!