I like the idea of key metrics for every meeting, but I feel like there may be some meetings that just don't fit this. For example, a meeting among managers and their director may be a forum for sharing general information on what each team is doing or struggling with, and aligning on common ways to solve these problems across all teams. Or checking in on engineer happiness across multiple teams, seeing if there are opportunities for moving people between teams.

The only metric I can think of here is that items raised on the agenda eventually get solved. Previously, I've been in meetings like this that simply used "traffic lights" for each team to represent a general state of health. Would you consider that enough of a metric?