Additional integration with Microsoft 365's Power Automate. I can envision small automatic scripts or larger applications leveraging the ability to send messages to individuals, groups, and teams via RC client or SMS.
A PowerAutomate flow that monitors sales numbers in a database or Excel spreadsheet and generates a message to a team when they meet their numbers.
Onboarding system that messages HR, IT, and a new hire's onboarding flow is in process and what state it is in.
Maybe a flow that monitors events within the O365 ecosystem and texts or calls IT when some process errors out?
There appear to be mechanisms for much of this type of notification type traffic in Teams, but what if the organization does not want to use Teams? RC isn't quite as heavy as Teams and implementing a way to SMS, message, or call directly to RC seems like a valuable integration.