I'd be extremely happy with 10 Bit Raw!
Anything is better than the current 8 Bit 422 (with the new uncompressed hdmi update).
Would it be possible?
Why not team up with Atomos? The Ninja-2 is capable of recording 10Bit.
Think of how much business this would give Atomos!
Canon 5D Mark III + 10Bit Raw 4:2:2 + Atomos Ninja-2. What a combination!
(An instant Blackmagic killer...)
A possible dream?