“No one attends in person” — I find this one to be the toughest, especially when the biggest group is in one office. We’ve tried that a few times and failed miserably: Google Hangouts would instigate a limit of people in the session, kicking participants out automatically, there aren’t enough phone booths/pairing rooms for everyone to be online. What we learned is this method works best for meetings with 4 people max.
Working sessions vs meetings — love this! Would like this to be a reality for both remote and in-person meetings.