Since then I've seen a few more, but not many. I don't think I've ever waited long enough after an interview to meet with others on making a pass / offer decision for a thank you note to make a difference. Even when we had a group for a single position and there was time to pick between candidates, we at least had already passed on our feedback by the time one could be sent. At that point, I don't know that a thank you note would make a big enough difference for me to reach out and change my feedback that would put them above someone else in consideration.