I feel like the megafauna that were eradicated by homo sapiens are fair game to try to resurrect. I mean, they're only gone because cro magnons got carried away slaying furry dragons.
..but practicality ran the horse out from that role.
Compared to your zero the millipede would have... outputs.
For example in western Europe bears were hunted to extinction before the middle ages, but you can still find bears in Russia and in the US.