I think this is a very important contribution. The only internal downside of this might be that the simulation of the overseer within the ai would be sentient. But if defined correctly, most of these simulations would not really be leading bad lives. The external downside is overtaking by other goal oriented AIs.

The thing is, I think in any design, it is impossible to tear away purpose from a lot of the subsequent design decisions. I need to think about this a little deeper.