I'd like to believe there would eventually be shown enough cause for a court to order a ballot by ballot inspection Broward county 2000 style. A recount means nothing if there are bags of disqualified ballots, and even a forensic inspection means nothing if those disqualified ballots weren't preserved, or the chain of custody of the ballots can't be verified.
The idea that Arizona, or even just Maricopa county, would revote is wishcasting. I don't know of any precedent for it and there's probably plenty of precedent for bad elections to be accepted as "whelp, nothing we can do about it now." and maybe some of the parties involved get slaps on the wrist and strongly worded memos in their permanent record.
What I think does add value is the effort, even in a losing effort, to uncover the depth of the inconsistencies, document them publicly, and make an effort that is addressed by tightening up voting procedures, maybe in Arizona, maybe in other states where voter integrity hasn't been addressed, and carries forward in subsequent elections.
Yes, this is very similar to the old "moral victory" line that establishment republicans have been feeding to us for decades when they lose but lose with principle, but we have to approach the battle as something more than an election-by-election struggle. If we ever give up on elections being trustworthy, even in a few states, we give up on democracy and we give up on the Republic. Might be that we have to play by the other guy's rules for a while to get there, juicing voting results with legally pursued ballot harvesting and emotionally-influenced vote targeting during extended early voting, but the objective should always be one legal voter, voting one time legally, preferably all on the same day and using the same set of information to evaluate candidates... and if we can help it, voting on durable principles rather than fleeting emotions.
There are a number of examples of a court ordering a new election in the US:
https://www.chicagotribune.com/news/ct-xpm-2004-08-07-0408070270-story.html
And overseas, recently a German court a new election in Berlin.
Bank robbers don’t get to keep the money when caught. So why should cheaters get to keep an elected office when caught?