So much of this is based on the historical "the captain is the one that has experience". There is plenty of experienced FOs flying with less experienced captains. I am an FO, and I have over 10k TPIC. Most of the captains I fly with have less than that. So the whole "the FO might freeze" does not sit right. And when I was the experienced captain flying with low time FOs I felt the same. If we have an engine failure after V1 we don't hand over controls, why do we do it when we have an engine failure before V1? I can see where in the high speed regime the call should be made by the captain, but I see no reason to hand over controls at that point. I flew pax abroad for a company where everything including starting engines and taxiing was PF/PM (dual tillers). Only the captain could call for the abort, emergency descent and evacuation, but the role did not change. Still feel strongly that was the best way.