I've had no issues with stills, mainly things that push the camera in LV.
I've noticed a LOT of stuff present in menus and not working at all.
Most of my menu stuff working working now, I've tried to comb through it and make sure. Some things aren't perfect. There is also the difference between someone like us operating the camera and someone unfamiliar with internals just wanting to shoot and go home.
Main thing with this is that I don't shoot in 720P nor use the wheels most of the time, was just happy to lose the canon dialog. But yea, kind of a big thing to miss. I have past bins up so if there is a regression please inform me about it and use a past bin till its fixed.
Before we hit a stable main page release, a lot of testing will have to be done and I'll probably need to make something like what you have here for 2.3 Its still the most working digic V port right now because it absorbed all the hard work from 5d3/m/650d, etc.
I've been implementing something or testing almost every day and have not had any failures when I really needed the camera. Nobody has done like a 14hr balls to the wall shoot with it though.