If Republicans can cut out the cancer of Trumpism, “corporatist” Republicans from the northeast and midwest might be able to ally with “quasi-libertarian” Republicans from the west and save the GOP. But that's a big if.
Ranked choice voting is a good option, but it does tend to slow things down in terms of getting results. A few cities in Minnesota use it for local races, but I don’t think any of them are yet using it for the Presidential race.
I believe Maine just used it for presidential. (There was some back and forth in the courts on that; I forget where that landed.) They're the furthest ahead with it.
5 cities just passed RCV themselves last week. That brings the number of significant cities up to about 15, I think, including San Francisco, New York, Boulder, and Minneapolis, among others.
RCV takes a little bit longer to count, but... really, that's the least of our worries at this point. :-)