You can do RLAs for IRV
This addresses the need for verifiable election integrity in jurisdictions using IRV, though it is incremental as it applies existing audit methods to a new voting system.
The researchers tackled the problem of auditing Instant Runoff Voting (IRV) elections by conducting the first pilot of Risk Limiting Audits for IRV in San Francisco's 2019 District Attorney race, achieving an efficient audit with a sample of only 200 ballots to a risk limit under 0.05.
The City and County of San Francisco, CA, has used Instant Runoff Voting (IRV) for some elections since 2004. This report describes the first ever process pilot of Risk Limiting Audits for IRV, for the San Francisco District Attorney's race in November, 2019. We found that the vote-by-mail outcome could be efficiently audited to well under the 0.05 risk limit given a sample of only 200 ballots. All the software we developed for the pilot is open source.