I can't say what he's done because it's not provided to us his accomplishments, or really full accomplishments. He's president of NOA, I'm sure he's had to implement things on his own and not just a yes man.
I will bring up his presentations. Out of the 3 presidents of the big 3 companies, he's the most fun to watch. The other two seem to be all about business and a catalyst towards the next item up for presentation. Reggie does this, along with a quirk, something he does solely that the other two don't. I don't know if it's because his face is just right for Nintendo(he has a goofy face, admit it), or if he's channeling charisma from the 3 stooges(I mean this to be a compliment). He's one of those guys who stand out, if you let him speak that is.
