Option to have "Critical Alerts" on iOS for emergency-priority messages only (not high-priority and emergency-priority as it is now)
I really like the Critical Alerts option now available in the iOS client. However, I'd really only like it to happen on messages that I've sent as Emergency Priority. I have a lot of existing infrastructure that uses High Priority messages for things that need attention, but aren't life interrupting emergencies like, well, emergency priority messages. Perhaps others like the Critical Alerts on High Priority messages as well, so it'd be great to pick which priority level is considered a critical alert.