Not only has verus-analyzer gotten a lot more stable, I suspect that that in the ~2 years since the last attempt, the rustic side likely has gotten a bit less brittle too.
Brian Milnes on the Verus Zulip (link) posted a config that connects Rustic to verus-analyzer, which might be a good starting point when re-considering the connection. We'd still wish to keep it under the experimental flag for some time, but then at some point switch it to always-enabled once it is seen to be stable.