But I think you're onto something, human languages just aren't optimal here. But to actually see this product to conclusion you'd probably need 60 to 100 million. You would have to completely invent a new language and awesome invent new training methods on top of it.
I'm down if someone wants to raise a VC round.
I don't think humans should be involved in developing this AI-AI language, just giving some guidance, but let two agents collaborate to invent the language, and just gratify/punish them with RL methods.
OpenAI looking at you, got an email some days ago "you're not using OpenAI API that much recently, what changed?"