The basic asynchronous approach is potentially interesting, but:

1. Agents usually depend on output of the commands they're running in order to make decisions about what to do next, so how do they behave while they're "waiting around" for the output they need?

2. Agents can _already_ run software async, via multiple mechanisms: raw CLI tools like "nohup", literally running tools in parallel (I see Sol do this often in the Opencode TUI harness), and using parallel sub-agents to e.g. research in parallel.

Thus I wonder, how much does this really improve speed vs only improving the "appearance" of getting more done faster?