Do you think Vlad will do it? If he wants to, he can. He's that awesome...that good. There's no reason why Vlad can't hang on another 6 or 7 years, just to beat Joe Louis's 12 year record as longest reigning heavyweight champ. Nobody can beat Vlad.
I think he has 4 years left, then he will be 39/40, as long as he stays injury free he should be able to reach the 10 year mark, I dont think he reached louis in years and defenses but he will get close.
No. He's already starting to get injured more and more, and those problems will only get worse as he gets holder.