Why not a 21.6mm x 21.6mm sensor?

reygon wrote:

So... It's VERY expensive, complex and requires time from the initial set-up and then production costs. You are technically introducing a new standard as it will impact not only hardware but also software and peripherals (lens & etc.). In my previous work as product engineer for wiring harnesses for Ford and GM cars, it takes 2-3 years from design to prototype work before 'green light' for first production.

we haven't even discussed R&D and registering/approval of patent. How many companies worked and agreed together before micro 4/3rds became a reality?

Soooo.... your reasoning and justifications are very minute and not financially logical on the overall scheme. Personally I think 3D and better phones sensors are the commercially and viable investments. 3D lenses for camera are slowly coming our.