He's still 6'11.25 in normal shoes. That's more than fine for a modern Center and, paired with Bismack, is above average for a front court unit as far as height goes. Not to mention that they both have the athleticism and strength to guard any 4 or 5 in the league. They would also have two of the top 21 wingspans in DX's database at over a 7'6'' average.
Simply put, even if Drummond became nothing more than an athlete, we'd have the biggest, longest, most athletic duo in the league.