Well... You've nearly got me convinced to jump ship too. I've been holding onto my 7D despite not having much work for it anymore because I keep hoping that Canon will come to its senses and issue meaningful firmware upgrades to those of us using these cameras to shoot video.
I understand that the 7D is first and foremost a still camera, but a major selling point of this camera was its video capability. It was developed and released hot on the heels of the success of the 5D Mark II which came as a complete surprise to Canon. It was so much of a shock, that several years later they still don't understand what they've discovered and how the pro video landscape has irreversibly changed forever.
I don't want to go back to shooting on small sensor cameras--not even the 2/3 inch chip cameras I've used for 20 years now. And unlike yourself, Andrew, I actually think APS-C is the perfect size for filmmaking. What's so utterly frustrating is knowing that Canon has intentionally hobbled these cameras--they are capable of much better video performance. The 7D resolves bags of detail when shooting stills, but switch to video mode and fine detail goes to mush. That's not the hardware. That's Canon's poor implementation of a poor choice of video codec, and the method Canon employs to downsample 18 mega pixels of information down to the roughly 2 mega pixels needed for HD video. Surely those things could be improved in a firmware upgrade?
I don't see any difference at all between video shot on the 7D, 550D, 60D and now 650D. As far as I can tell, they perform identically. There is a big difference in build quality and handling, though, and as far as that is concerned I can find very little to complain about on the 7D. It's a lovely object to hold and to shoot with and its build quality and weather resistance is top notch--as it should be. After all, this is still currently the top of the line Canon APS-C offering. It looks as though the 7D might sit at the top of the range for a while longer as well in light of news of a long awaited and very welcome firmware update. I'm afraid it might be too little too late, though. It's great that Canon have finally activated manual controls for audio, but if it doesn't sound any better than a Zoom H4N I'm not likely to use it even though it would be much more convenient to do so.
People are all fired up about the Blackmagic Cinema Camera and Sony's FS700. I'm pretty excited too. Problem is so few people are really ready for RAW or 4K. (And before you say anything... Yes. I do know that you don't HAVE to shoot RAW on the Blackmagic camera and you don't HAVE to shoot 4K on the Sony camera. Actually you can't shoot 4K on the Sony yet.) The amount of storage space needed to shoot in these formats is staggering, let alone the additional space needed for backup and archiving. HD is fine for me right now, and I think Canon already has the answer to these cameras in its APS-C line. Especially the 7D with its dual processors which, as far as I know, aren't used for processing video at all--just stills. I can't help but think those processors could be tasked to improving the 7D's video performance.
In fact... I would be willing to pay for a video-specific firmware release that would effectively give those that would be interested--i.e. filmmakers--something akin to a 5D C, or 7D C. Improved fine detail resolution, decreased moire and aliasing, peaking, zebras... Yep. I'd pay for that. I've enjoyed shooting with the 7D, but if Canon don't do something soon, it's time to give it up and buy an FS100 or something that might actually help me pay the bills.