It's cool that we're at a point where we can even think about reviving a species, but there's so much to consider before doing so.

I think the most difficult point to consider is whether or not there is a reason to revive them beyond Human curiousity?

Captive breeding/release programs are difficult enough as it is with extant species, so how difficult might it be to release a species that has likely been missing from its previous environment for 100+ years, since its extinction the ecology of its previous territory has likely altered dramatically.

I personally do not like the idea of reviving a species just for it to live in captivity, it would be kind of a morbid reminder of our past mistakes.

I do however support the idea of employing the technology to help support currently endangered species that are close to being functionally extinct.