Only if you can expect to manage to get a supply of these folks. On the absolute scale, assuming that level of ability X is absolutely necessary to make meaningful progress (where X is relative to current human population) seems as arbitrary as assuming that human intelligence is exactly the greatest possible level of intelligence theoretically possible. FAI still has a lot of low-hanging fruit, simply because the problem was never seriously considered in this framing.
Only if you can expect to manage to get a supply of these folks. On the absolute scale, assuming that level of ability X is absolutely necessary to make meaningful progress (where X is relative to current human population) seems as arbitrary as assuming that human intelligence is exactly the greatest possible level of intelligence theoretically possible. FAI still has a lot of low-hanging fruit, simply because the problem was never seriously considered in this framing.