FWIW most experts now favor approval voting [1] over ranked choice. Approval voting has similar advantages as ranked choice in allowing 3rd-party candidates and favoring moderate candidates. It avoids the chaotic behavior that RCV can exhibit [2] where shifts in the order of voters' down-ballot preferences can very significantly alter the outcome of the election [3]. And it's also much easier to explain to voters ("It's like voting today, except you vote for everybody you'd find acceptable and the best candidate wins. Sorta like when you're picking a restaurant to go out to with friends - you go to the place that is acceptable to the greatest number of people, not the one that a minority really want to go to"), doesn't require that you reprint ballots (you can re-use normal FPTP ballots, but you just count all votes instead of disqualifying ballots with multiple candidates marked), and is easily adapted to proportional representation and multi-member elections (you just take the top-N best candidates instead of the top-1).
[1] https://en.wikipedia.org/wiki/Approval_voting
[2] http://zesty.ca/voting/sim/
[3] https://www.reddit.com/r/explainlikeimfive/comments/1o1byqi/...
Not to be cynical, but what does it look like when most candidates aren't acceptable to a majority of people?
What does what look like? Approval voting? The unacceptable (usually extreme) candidates fail to get votes and so get booted out of office, with their places taken by more moderate, common-sense candidates.
FPTP, particularly with partisan primaries, has the misfeature that you need to rally the base in order to win the crowded primary field. This leaves only extremist candidates heading toward the general election. In a country like the U.S. where voting is not compulsory, this turns off the moderate electorate, who are forced to choose between two extreme candidates that both seem batshit crazy, and encourages them to stay home.