I am being civil, apparently you haven't paid attention to how your correspondence has been coming off. No matter, I'm not worried about it.
So aspect ratio is what you don't care for, I take it? That's a legitimate reason, however the advantage to 4/3 sensors is that optics can be made more compact than with APS-C sensors, frequently allowing for things like optical stabilization, fast focus motors and larger maximum apertures without a corresponding increase in size. Size being a key factor in the lens for a future GR.
I could take or leave all that, however, just on the basis of how good the lens already is on the GR. I would only want them to rework their formula if they didn't sacrifice any of the performance of the current lens. It makes the camera, just as much as the controls or overall size make it.
As is, the sensor in the current GR is outresolved by the newest 4/3 sensors: just look at the studio scene test on dpreview for the Panasonic G9 and GR II. The G9 sensor is clearly better, though I suspect the GR lens is a little better. I know
@Lightmancer wants megapixels and more megapixels, so the 20MP sensor on the G9 isn't good enough, but I think only a small percentage of GR users are that concerned about megapixels.