Dean Potter is awesome but he did ever go above 8000 meters?
I am gonna drop in a vote for:
Greg Child, hes a 8000m (K2) included, sport climbing, trad, big wall, thrasher extrordinaire.
Granted there are alot of HOT new multipurpose hardpersons but he was hard/multitalented before alot of folks.
Plus he climbed the second ascent of my UBER obscure glue up: Housewives on acid 5.11c at Kanasket