I don't see the point in making cameras larger just to create the impression of capability. If the body is smaller, then I can put a pancake lens on it and have a very compact and portable solution. If I do need a large surface area to hold the camera, adding a grip would seem a better solution (which is done even with current DSLRs). It won't work for those who need extreme weather sealing, but the 1 DX crowd are unlikely to shift to mirrorless in the near future. Equally, I don't see the point in making the camera small just to prove a point. Both Sigma and Tamron CEOs have criticised Sony for compromising the lens mount size to make their mirrorless cameras small, making it very difficult (or even impossible) to make certain types of lenses.