[tempestn]

We've been doing almost all of our team meetings (ranging from 5-8 people) over Slack for the past number of years. They're both faster and more productive than the video chat meetings we used to have, and leave a written record. A huge benefit over a spoken meeting is that multiple people can be 'talking' at once (often in threads) without interrupting each other.

I'm also not sure why you consider the record useless from a historical perspective. It's not structured documentation, to be sure, but it's at least a useful as email in that respect. (More-so because it's generally much easier to search.)