Add a Virtual Moderator
Formal tooling for creating an agenda, sticking to it, and moderating conversations to ensure everyone gets an opportunity to speak would be a significant improvement for virtual meetings. This twitter thread has a great description of how to implement something like this.
Christopher Hoard commented
I would like to see a moderator role which can control the meeting. The more successful meetings I see generally have a host/moderator who supports the presenter/speaker. I would like to see the moderator be able to mute all attendees except the presenter/speaker, be able to hard mute any presenter/speaker if required, be able to kill sharing or automatically take control, be able to eject, and alter the meeting options