As far as my constantly repeated on here selfish desires, I'd love to see a video geared R. Mid-low MP for a lesser crop or a full frame readout in 4K. 20MP on the DX2 is nice because the crop is only 1.3x I'd love to see a 12MP sensor like the Sony A7S that does a 1:1 readout for a perfect 8.8MP 4k. Of course with Sony... you have to deal with Sony ergonomics, battery life, sony colors, lenses, etc... I'd rather not.
Since the beginning, I have said the MILC builds lend themselves naturally so well to video, and I just can't understand some of the decision making on Canon's part. No, I'm NOT leaving Canon. They aren't going to collapse, flop, fail, "DOOOOOOM" .... whatever. I'm not one of those. But there has to be at least one guy at Canon who sees that there are some great opportunities out there going by. (Hey about 4k out from my DX2 Canon... waiting for that firmware ;-)
I'm still waiting to see what this big firmware is for the EOS R. More Eye-Focus (which no one seemed too jazzed about in reviews as it really didn't seem as good as Sony's) and what else?. $1299 EOS RP is great for stills but got shanked on video rather insultingly (no 1080p 24 which is just ridiculous). So here we are. I'll keep sitting and waiting for Canon to really address a not-so-insignificant market, that, to their credit Sony and Panasonic and Fuji have tried to.
I could be fairly happy with the EOS R with a very nice 10 bit 422 Clog output over HDMI. 4k60 would have been perfect, but hey, I really can't complain too much. They didn't give that camera a recording media that could handle it anyway.... but perhaps it could have been recorded externally.... I think that's how the Sony's addressed the heat issue. "hey we can do it! we just can't do it IN camera"
The A7S2 is about the same price as the EOS R. So let's see an EOS RC at $2300 - $2500 too.