I too chose the 80D over the 7DII for the tilt screen and sensor, but I have to agree that more frames per second would be nice. I think y’all have already covered the sports aspect but 12 frames per second would be great for wildlife.
An example would be from my trips to Yellowstone. It is entirely realistic to expect to be focused on a bear for an hour or more, waiting for that moment when he raises his head to look toward the camera. In that split second that he does, the more frames you have, the better. It’s rather funny to be around several photographers and hear very little clicking followed by what sounds like several machine guns going off when the bear raises his head.
I’ll be buying a 7D III when it comes out.