I've owned the 6D for a year now also, so I knew this already :P Great video. If only I had 1/10 of your skill. Only been shooting for 2 years, so I gotta get a bit more practice. I bet those LEE filters kick butt.
The Wifi is really handy if you want to quickly upload SOOC images to social media. Facebook destroys image quality anyway, so SOOC jpegs are fine. I agree that the EOS app is underwhelming. I think having the ability to transfer RAW or video files would vastly improve it. My main limitations are the glass I use, not the camera. Having a 2.8 70-200 or the 135 f/2 would allow me to shoot with much lower ISO. Thankfully, ISO 16000 shots of the stage are pretty decent for web use. The IQ in this camera blow away the 7D. The 6D shines at car shows or scifi/anime conventions, not so much at the local quidditch match. One year later, I'm very happy.
Canon 6D, EF 135f/2L USM, EF 200mm f/2.8 II USM, EF 50mm f\1.4 USM, EF 40mm f\2.8 STM, 430exII speedlite, Flashbender.