No place for m4/3 to me. I like the size of a DSLR in my hands; in fact, I'm very happy with my 60D and the 17-55/2.8 and the pics I can take of my kid with it. I wish, though, I had a smaller yet capable camera for carrying around. I've considered a Canon EOS-M, especially after firmware + crazy deal, but I'd rather have a small camera with a fixed lens and built-in flash, and letting the lens-changing and flash-attaching thing for DSLR-demanding situations.
I can't really see much of an advantage of m4/3s over DSLRs. Smaller, yeah, but still not pocketable, and you still have to change lenses and all that.
I'm probably getting a Sony RX-100 ii for good enough casual pics and video, and sticking with DSLRs (maybe a 7Dm2) for important or challenging situations, like my kid learning to walk or playing soccer. I can't myself going FF, as next gen sensors will probably be very good, at least for my amateurish needs.
My future kit, as I can think of right now:
- Sony RX-100 ii for everyday things
- DSLR for important moments -- 7Dm2, 17-55/2.8 and 70-200/4L is what I'm thinking of right now
- Borrowed Handycam when really good video matters (not often to me; not a video guy)