LeBlanc brings the experience, been an MPO for years, worked under Chretien, and his dad has held pretty much every office except for PM (MP, senator, Speaker of Senate, GG), without the massive baggage of his Premiership and the fact he's from here in Toronto, and lets not forget his hissy fit this weekend.
Hell, Dominic probably knew more about the true workings of Canadian politics and Parliament before he could drive then most of us will ever know.