I actually enjoy herdr a lot, and not just for agent management but the whole multiplexer is plenty powerful defaults and easier than tmux.
At some point though, it's too much information for my tiny human brain to process, even more than 3 agents is hard to manage and context switch. What is the point of managing herd of swarm of whatever I wonder?
Herdr has been my daily driver for about a month now. It cant auto-name sessions like every other multiplexer though. That one stupid feature is so valuable I'm considering moving on.