I also never understood this desire to build an agent org chart with persistent identities, often giving them names. Paperclip seems to advertise that model. I think it's much simpler and more flexible to simply spawn an agent for each task.
One argument for the persistent identity model is that you can give them special skills and context. I don't believe that's a good argument. In my experience, you can just give each agent access to the full set of tools (including RAG search) in the form of documentation and skills, and they'll use that efficiently. Skills have a tiny front matter and hardly bloat the context, and the documentation just needs to be tree-structured with cross-links for progressive disclosure. LLMs navigate that efficiently, so the cost of having all context accessible is low, while the risk of cutting the context boundaries for the persistent identities non-optimal for a given task is rather high IMO.
I think it is because it is easier for humans to understand what's happening.
Efficiency wise I'd imagine at least picking a leader from the start just saves initial hustle and context window