The ability to send/recieve text messages based off a trigger, set reminders and alarm, schedule phone calls, etc
We no longer plan any improvements with our Windows phone integration.
You can now use a beta of the Flow app here: https://ms.flow.microsoft.com/en-us/blog/windows-phone-app-beta-is-now-available/
You literally posted this a week after I jumped ship to iOS. I'm very happy to see that we're at least spending time on the WinPhone platform. I thought it was abandonded.
The Windows Phone app is here: https://flow.microsoft.com/en-us/blog/announcing-flow-windows-phone-app/ - although we don't have the ability to work with text messages or alarms at this time.