Now the bill for splitting. This is the term the launch posts tend to skip.
Coordination cost
The time a team spends staying in step and not working: waiting, conflicts, re-reviews, explaining things again. It grows with the pairs of workers and not the workers. Past some point, adding one makes the whole team slower.
Agents make this worse in one way. They are confident, they do not talk to each other unless you build that, and each conflict costs another run and another review. A reviewer is a queue too, and that queue is you.
Say it to your agent
“Before you add another agent, show me how much time the current ones spent waiting or redoing work. If that's rising, we fix the split or the review first.”