By who? By all the people that want video on their camera. So that's purely personal. I'm not interested at all in video, so for me that would never be the reason of a fail. I see the same remarks for every new model coming over here. Simply because people want to use a camera in another way as the manufacturer did create it. No, I don't want a body that must do all (video, high speed, ...). I like the fact that cameras are dedicated to a specific area of use. That doesn't way to say that you can also use for other ways, but they are really not intended as general purpose tools which deliver the max of specification in all areas. Forget that, will never happen.
I second that. Maybe it's because I'm coming from the programmers side and there is one written rule in Unix, since the 60ies: "One Job - One Tool!". If you make a specific Tool, in this case for photography, make it right and to the point. Don't try to make an univeral-swiss-armyknife because it will do a lot of things but nothing really right, because it has to overcome compromises... everytime.
If they'd include 4k it would be nice, but just for capturing 8MP-Photos @25/50/60 Frames. If they don't... I don't care. This is optional, also a swift screen (I hate those!) or an EVF. Canon should make a good sensor and useable ergonomics, paired with weathersealing and batterylife.