The video stuff is pretty interesting if you're all about using a dSLR for video.
To me however, there are a few big changes to the 80D that let it step away from the 70D significantly.
1. Buffer is better, this matters if you are using that 7 FPS in RAW.
2. AF is a totally different beast. I don't care about how many cross points, I don't know anyone who does wildlife/birds with all those cross points. But what does matter is that the center cross points are dual ones, for precision with F2.8 or faster glass, and/or can be used in one-shot mode down to -3 EV (just like the 6D), and also, can be sensitive enough for F8 aperture glass (so making some lenses with TC options possible). That's a huge deal. That means much more accurate wide aperture prime autofocus. That means much, much superior low light autofocus. And that means more interesting combinations are possible with glass.
The rest is just slightly better, the same, or video related. And that's fine, because in a year or so, this will be under $1k.
Very well rounded camera if you think about it. It has AF abilities that are kin to the 7D2, 1DX series, 6D series, etc, and it's own video capabilities that are not on those other models, bundled into a decent body with decent build, good resolution and good enough ISO performance, with better than average FPS and all the little bells & whistles. Very well rounded, affordable camera.
Very best,