But I would be lying if I said that I'm not worried about Canons future at the moment. I really hope that they haven't forgotten us still photo guys. Video improvements don't mean the slightest thing to me (though I can appreciate how they do to other people).
lol. I do not have such a noble sentiment towards any brand though. I don't care for the future of whatever camera. If Canon was to fail, it will fail, no point worrying about it... and if that really came to pass, then I will switch... doesn't actually affect me... except that my gears will go down the drain though (but I believe I am still able to fetch some money by selling them away).
Actually if you look at it this way, video improvement is a big thing, in the past our mobile phone are pure mobile phone and when someone slap a camera on the mobile phone, I had called it a stupid move, afterall a mobile phone is for me to call other people with the convenience of being anywhere in the country or out of the country. But now, I find myself unable to live without my cam phone. This is the same thing to DSLR. When I got myself a second hand 40D, I couldn't understand why people would want a DSLR with video function, you want to take video, use a viewcam! But after I got my 7D... well... tat is a different story...
So... yeah, a good video mode is something that many people would have craved and so it is not a small innovation or addition (whatever you wish to call it).
As to high ISO performance, Canon's high ISO performance is something that can be lacking behind for their APS-C camera (I feel) when compared to other brand's camera (except for the m4/3 camera), maybe due to the smaller sensor that Canon sported... but that is definitely not the case for her FF camera. What I see is that the AF of 5DmkII is seriously nothing to boast about, but the 5DmkIII had solve this problem. And if I had the budget to get the 5DmkIII, I am definitely going to be a happy user. If you compared D800's high ISO performance with 5DmkIII, I would say that the 5DmkIII win marginally, but D800 do out-resolve 5DmkIII by pretty much... so it is up to what you want. I want great high ISO noise performance over massive MP, but that is again me only.
I would be lying when I say, I never think of jumping to another wagon... or I would not have gone ahead and play with other brands camera. But... will, like I mentioned before, I always come back to Canon... bcos I like Canon at this moment.