Non-catastrophic with respect to existence, not with respect to "human values." I'm leaving values out of the equation for now, focusing only on the problem of existence. If species suicide is on the table as something that might be what our morality ultimately points to, then this whole formulation of the problem has way deeper issues.

My point is that starting anew without taking into account the computational gains, you are increasing D(u) efficiently and D(u/h) inefficiently, which is not favored by the objective function.

If there's something that makes humanity very resilient to exogenous shocks until some later time, that seems roughly analogous to cryogenic freezing of the ill until future cures are developed. I think that still qualifies as maintaining human existence.

Doing the opposite of what humans would have done is interesting. I hadn't thought of that.