(RCV is complex enough to disenfranchise minorities)

RCV is a straight-up misuse of multi-winner systems, but it happens to beat first-past-the-post because anything would.

The right use of ranked ballots is a Condorcet method like Ranked Pairs. It works the way people think ranked ballots work before they really ask how ranked ballots would work.

But yeah, Approval should be the default. There is no good reason not to do it.