Had this exact idea recently, applied to various software tooling. I think agents of all types are going to follow a similar path to self-driving cars: first 80% comes in a big boom, and the last 20% comes over a decade of training and simulations.

I think each agent use case is going to need a simulation for its reward to eek out the last 20%.

Edit: Realized I forgot to say Great Work! Looks Cool!