Don't sports HoF inductions take place at least a few years after the athlete has retired, so they can be based around their legacy rather than the present day 'this guy is killing it' hype?
So right now, I'd be nominating people like Shane McConkey, Doug Coombs, JP Auclair. People like Henrik, Candide, T-Wall, hell even Tanner Hall and Mike Douglas are still out their, still killing it, we still don't know their legacy, so they aren't yet hall of fame-rs. Not to say they aren't on the 'greatest ever' list, but we don't really appreciate the impact individuals have on a sport until they've left it. Like Brogan.
Like, take legends in other sports who are still playing. Roger Federer? Not in HoF. Tiger Woods? Nope. Tim Duncan? You guessed it, no. Why should freeskiing be any different and allow current pros in?