Doug, the recount would be more extensive since it would be multilayered, with the loser’s votes being reallocated to their 2nd choice candidate. Perhaps, to make things easier, there could be multiple stacks for A’s votes depending on the choices: Ab, Ac, Ad, etc. then Ba, Bc, Bd…

I think that ranked choice would result in less-partisan candidates and, eventually, in fewer recounts due to partisanship “If I lost, it must be because the vote was rigged!” As I recall, 50 years ago, recounts were rare; now they’re a standard part of election denialism.