I remember a chat over beers back in my university days with a postgrad bio student and we came up with a pretty fun idea that might actually work regarding using cloning to *increase* biodiversity.
Imagine if you will that genomes only had 500 genes. About 450 where common amongst all mammals (In reality that commonality is MUCH higher).
What would happen if you took a thriving species and found all the diversity in genes in that 450 common gene area and took a highly endangered species and created a few hundred clones with the "diversity" transposed from the thriving donor species into the endangered recipient species, creating essentially artificial diversity.
Preferably target the areas where its most needed, immune system etc.
Sure it wouldn't be the *original* diversity, but it'd be A diversity and potentially create enough of it to give that species a fighting chance when reintroduced to the wild
I dont know, it was a beer idea, but after 20 years I'm still convinced its an idea worth investigating.