I really like that all my clients can see each other, even if they are not connected at once via our chat platform or video calls.
It is very easy for them as well because it's super simple with just one click of a button which adds me immediately to an online meeting room where we start right away communicating together without any issues about connection problems etc., Also there aren't many restrictions regarding time so everyone has enough flexibility when scheduling meetings/calls through this tool compared to Skype (which also works great). The only thing i would say maybe could improve more was adding some kind of notifications / reminders before people join us - especially since you have such flexible timespans available but still no notification system yet?