I know Bakery gets a lot of attention (rightfully) as the best Kharazim player out there, but I think ADRDs Kael deserves some love as well.
As someone who plays Kael more than every other hero combined, he is without doubt the best pro-level Kael player out there. He just plays him at a far more dangerous level than other teams, and it's noticeable how often they win when they get Kael. In particular he's much better at double bombing than a lot of top end players, who are still wasting their empower on flamestrikes I feel.
EDIT: Also think Dignitas have noticeably improved over the last week - wonder what scrims have been going on.