I agree with yayodeanno - it would need a LOT of CGI, and most mini-series don't seem to have the budget. AGOT doesn't have (or need) that much, neither do the better Starz series like Spartacus. And I shudder to think what it would be like if someone like Hallmark or the BBC got their hands on it.
yayodeanno said:Clint is 82 years old now...
that is why, its a wish*.