Skype was a steaming pile for sure, but it had the ability to search for and message a distribution group and get an answer from whomever was available and I could pin it for future use. Now I have to know every name in a group and message them individually until I find someone to help or start a meeting to get everyone at once. It may just be how our Teams instance is configured, but I miss that feature. And who decided there should be a limit on how many people I can pin in Teams?
My wall button still works, plus I get door status, car occupancy, and remote door control, all with no cloud connection or subscription necessary. The app isn’t required, but it’s super useful.