I've been comparing the EOS-M to the Sony Nex series and IMHO this is what the EOS-M needs to be competitive, at least if you want to use manual focus lenses via an adapter:
I partially made up my mind, for a mirrorless I definitely prefer the Sony NEX-6 over the EOS-M (for now). I think it is so much more camera and more suited for use with MF lenses, also for the money. Lens-wise I would go for the Sony kit zoom in e-mount only, and a Nex-FD adapter for my FD lenses. Giving my FD lenses a new lease of life does have a lot of appeal if only I get to play around with them on a digital body. I have no interest in using my EOS lenses for the mirrorless body so EOS compatibility is not an issue for me.
Now I need to consider if I am truly going mirrorless, itchy feeling with the upcoming festive season
To change my mind, Canon needs to hurry up with that second EOS-M body!!