Yesterday I was supposed to have a call. I have the app open and it never once let me know that there was a meeting. The entire purpose is supposed to be collaboration with other people; if they aren't going to notify me on the web app, what's the point?
I know a lot of it is because of their need to support an infinite number of potential configurations, but if it had been a protocol instead of an app, we would have had the perfect frontend by now. (But then, how would they be stealing all of my data?)