Id be completely for this. I don't care if my camera has a mirror. If I want to use electronic shutter I can, if I want live view mode I just press the button. What I really want is the features of the mirrorless cameras. Don't give me an EF-s camera in an increasingly R mount world ha. 4k, ibis, dual card slot, R mount, even better low light performance than currently available, and most importantly unlimited record time.I am convinced the upcoming 90D (or whatever it gets called) is going to be the head scratcher. It is going to be the trial ground for new tech...new sensor, IBIS, might even put the R mount on a mirrored camera (would the APS-C sensor accept the new flange distance?). The R mount still has some new connections we need to learn about, could be related to the combined stabilization.
Here is hoping it all comes together into a great package!