I still dabble with M4/3 because I sometimes want to shoot long focal lengths but don't want to carry too heavy gear.
Leica/Panasonic collaboration hatched a 4/3 DSLR back in the day. I wish there was a "Leica M4/3" body as well. After all, why not. There's plenty of Panasonic Leica branded M4/3 lenses out there. It could be based on GX8 but the main thing is that the firmware would be more Leica like. With less buttons, why not.