No, i dont shoot video so its not sheathing i care about.
I still think £99 is not a lot to pay for a pro feature to be added to a camera for those that want it. If it were just a FW upgrade then i agree, it should be free, but its not just that so of course Canon have to charge something.
I saw a video a few weeks ago where a Canon engineer said, off the record, that the reason he thinks the crop is there is because passing the full sensor worth of data would create too much heat for the current design. He stated that the cost would have been higher because heat sinks would need to be added, and so the design of the camera would be different. Canon HAD to add 4k as everyone else is doing it. Some doing it better than others of course but as an overal package the 5D4 is still amongst the best at doing what its designed to do, IMO of course.
Of course this is not official, but to me this makes sense to me. Id rather not pay more for something i dont want.