yes I think that would be vital for implementing this in a way that would produce reliable outcomes.

smart users can easily find/ignore bad actors - agency relays dumb users need / will stick to default as always. no need historic perf. - similar WoT or bitcoinmint rating or trust model. nostrudel has RELAY REVIEW section before. what if SWAT team comes pull gun on RELAYADMIN HEAD ask him handover all realy log n record ? History of relay doesnot mean it will remain same relay forever

HTTP doesn't have any redundancy at this level. Redundancy for websites means using multiple servers on the same IP address usually through network routing tricks. DNS round-robin for example doesn't quite work. And yet HTTP servers seem to be doing just fine. Relays will become as reliable as websites over time, there is no reason they shoudln't be. Plus then we have our redundancy of specifying multiple inboxes or multiple outboxes. So I don't think there is a long-term problem with reliability of relays. Currently though, sometimes all of somebody's relays are not working properly because nostr is still a work in progress.