No because Hierro isn't genetically linked. It's made from naturally compressing and hardening reatsu above their skin. As for the regeneration. It's too much in my opinion. I frown upon it. Thiugh if you really want it, the restrictions on the healing will be heavy. So much so, that you'd be better off not having it.
Furthermore, while v i z a r d are approved in Soul society, it wouldn't be moral to be used on captain-class. Plus the Captain-Class shinigami are powerful as it is. I see no real need to steal another races attribute. It'd be almost as if they take shinigami's kido.
I say.
DENIED
Someone mashed the word "vi zard" so if you say it it becomes pussy