I'm truly confused as to the market for the mirror less cameras that fall between the G1X series and an SLR.
1. With any lens, it is not pocketable.
2. Requires company to make an entirely new set of lenses on a new mount.
What kind of customer is best suited for this niche?
I to some extent agree with your sentiment, but note that mirrorless interchangeable lens cameras are selling well ........... those moving up from a P&S are one category, another is enthusiast/pro who wants a small backup, and those that want something smaller, but are just not happy with the quality of the P&S offerings (though I admit the premium P&S offerings are much better now, than a year ago), so are willing to compromise on pocketability.
I don't expect Canon to have a large range of lenses available in the short term - couple of zooms and a couple of pancake type primes. They will probably push the EF lens adapter to show the wide range of EF and EF-S lenses as a point of difference
I'll be interested to see how far off the "premium" model is, with EVF.
I'm surprised Canon opted for APS-C format instead of the G1X size sensor, which could have allowed for a noticeably smaller package (lenses in particular)