I bought my 7DmII on Monday. Been configuring it. I take photos indoors and out, but my old trusty 10D just couldn't keep up with the dogs when they're running in the fields.
The one thing that caused me consternation in the first batch of pictures was the shutter release button. I had turned on the settings to always illuminate the AF point, and noticed that in one-shot sometimes if I changed pressure the slightest bit, the point would refocus in the middle of any composition change. (What can I say, cats don't stay still all the time, even if they are relaxing) - or worse, change focus on shutter depress. Since I got the 18-135 STM Kit (my widest glass was EF-28mm, which isn't quite wide enough for indoors on APS-C) I realized that the few soft-focus images I got must have been because it started to change focus after focus lock - which was easy to tell when I put a USM lens on that I could actually hear.
So I changed everything I could to focus priority and used a firmer half-press and made sure that if I had to recompose significantly (move the camera a lot) I relocked the AF and took the picture right away. That seems to have dealt with soft focus in all the mostly-still cases. Mirror swing imparts one heck of a kick in this camera. Seems to have more kinetic energy than the 10d's mirror, too. I had to adjust my grip on the body to compensate for it - I did a couple bracketed photos and discovered I really needed to have a solid bracing otherwise the images moved quite a bit. For now I'm compensating by making sure I have a faster shutter speed than normal when hand holding. I still have some issues with the AF tracking, and I haven't tried Servo AI yet - didn't have decent weather to take the pups and let them run themselves ragged. But hopefully those issues will be solved when the time comes for the firmware.
As for the video, it needs just a few more things to be good - including a fix to the phase-detect tracking - it tracks human beings fine for the most part, but does not like cats. Focus point slid around until it locked on to a background object and stayed there. I didn't buy this camera for video, but while it has all the physical tools to be a great video camera - the software lacks a lot.
Preferably I'd like a raw mode, but I know Canon won't like their DSLRs competing with their C series. About the only saving grace is the clean HDMI outputting 4:2:2. Combine that with an external recorder, and that might be enough. It just burns a bit that the in-camera choices are so poor and it needs a ML firmware hack to use it to the hardware's ability. I haven't seen it yet, but maybe canon will allow AF control through an external touch-screen monitor for video and live view - or someone will make a hack to allow it. That would solve a host of focus control issues.