Have experimented a lot of the last few months between 4k and 2.7k, various sharpness settings etc. Now only shoot in 2.7k with +1,0,0 at 30fps, use filters to keep the shutter speed down at correct exposure and depending on what I'm doing I'll switch between D-cinilike and Normal. I have a photography background (albeit it as a hobbyist) and I really can't really see the benefit of 4k over 2.7k right now. Perhaps when more people use 4k devices as standard but that's a while off yet. Any colour changes I tend to do in post. (Adobe Premiere Elements 15).
I not convinced that all Mavics are leaving the DJI factory with the same camera settings but that's just a hunch, otherwise there wouldn't be such a wide range of sharpness/colour setting recommendations out there. It's not a problem, I quite like experimenting.