Torii Hunter, from 2002 to 2015, was good for all of 23 defensive runs saved above average according to Fangraphs. If you throw out 2002 and 2003, he was good for -11 defensive runs above average. Yeah, sure, he might have been a world beater from 1998-2002, but we don't have that data.
Hunter also turned in pretty poor range runs above average for most of his career, too. Fangraphs has him at -7.4 range runs above average for his entire career, in fact. For the last 8 years of his career, he posted only one above league average season according to this metric.
And, if you look at Hunter's Inside Edge Fielding numbers (which, admittedly, were only collected during his last few years in the league), you'd see that he was really only consistently good for converting likely or routine plays into outs.
I hate to say it, but the numbers point to Hunter not getting many (if any) extra outs nor preventing many runs relative to his CF peers for most of his career. He made some great plays thanks to his wheels and it's nice to over-remember them, but once his wheels started to give out his advanced numbers kind of really expose the bad routes and the bad positioning.
I've no doubt he falls short of Cooperstown. He might even fall quite a bit short of New York.