My main reason for mentioning Nobel laureates is that it jumped out to me as an obvious group of people who might be suitable, the first time the thought entered my head that the CEV initial dynamic might be selective. Insofar as I am similar to other people, this suggests to me that said group is a Schelling point, which means that it wouldn't seem like a completely arbitrary choice of group (therefore leading to intractable disagreement about the choice).

The Nobel laureates aren't angels. Still less so is the average human being an angel. The perfect is the enemy of the good. Your point about unwanted selection effects on the other hand is to be taken seriously.