We go through this WTF/Wow - I don't expect that dichotomy with every release cycle. It has been the same for computers, software - Adobe CS, etc.
There are two different paths that I see when something new comes out:
1) The items that take cutting edge memory & processing power will trickle down to lower priced tools within 2 years.
2) Features that are great "wows" - that don't cost much - like video on the 5 D2 - will either appear on the lower end cameras, like the 7D2, 70D, T4i. Or will be enabled on those through Majic Lantern type hacking.
Canon pretty much announced the path for the Cinema cameras last November. They said they were enabling 4K on the front end on the C300, but we're still limited on the codec and data out. From that standpoint, I am happy that they followed on quickly with the 1D C and C500. We get the best internal and external storage - respectively - that they could deliver at those price points. We also get the Raw Codec that we can - hopefully - get our hands on for HD via HDMI on the 5D3 or other lower end cameras.
I'm on my phone, so it is hard to jump around to compare write rates. I think our best hope is for an extension of the HD options on the 2-3 new cameras that Canon is likely to release this year - looks like the T4i is coming soon?
Plus additional, firmware enabled features that have no real cost, but round out the functionality. Along with any new pro camcorder crossover, I don't know what is in the horizon there.
The $45K Cine lenses announced with the C300 were a clear sign of the target audience. The newer $25K lenses are still a clear indicator that this isn't for the $3K crowd.
I know some of you are in those leagues and can realistically talk about the fit or non-fit for you. But the marginal value for me and most of us hete is between the $1K and $3K base units, down from the $8K Canon 1Ds2 days. That was the last time it made financial sense for me to go to the higher end for the marginal quality gains.
I think the 7D/T3i sensors still have a lot of potential, with a better codec, better down sampling or binning, and the newer Digic 5 processor, with true HD at 60 FPS and possibly higher. A version of the Canon raw codec with log files would open up great options at the Super Cine level. I think that is most realistic for the next 2 years.
Full disclosure - I closed my studio 4 years ago, after 16 years of designing & implementing high end ($1-$20 million +) digital imaging systems for Fortune 5 companies since 1991. Now it hurts to take photos to post on eBay, so I don't have a lot of skin in the game right now. A poseur of sorts, but hoping to get back to creative work by fall.