>>4459414
I should have specified full frame.
There remains a gap in the market for a compact modular system that is supremely compatible with adapted rangefinder lenses or (ideally native) mirrorless lenses like Sigma C. Pic related but actually usable for photography (that means having true mechanical shutter and hotshoe at minimum, Sony A7C doesn't count due to being only EFCS). APS-C or M43 is not particularly interesting as you wouldn't use the entire image circle of the lens, making adapting fairly pointless, and M43 is also fucking dogshit and you should be shot for bringing it up.
Anyway, some of us want to use the same lenses on a compact second body and unfortunately the options for that are extremely limited and compromised. You could carry something like a GR instead but I'd rather a MILC to keep my options open.