I read these threads about the EOS-M (and mirrorless bodies in general) out of idle curiosity. It's interesting to view the wide range of opinions, from those (like myself) who have no interest in this P&S/SLR hybrid product category, to those who think it's perfect as is, to those who want just this or that tweak or upgrade to fit their needs / desires.
I think the reason why Canon is proceeding so slowly is because they have yet to determine whether this will survive as a viable (profitable) product category. Some seem to think it marks the beginning of the end of the SLR as we know it, while others appear to believe it will be no more than a footnote in the history of photographic equipment. I tend to think it'll survive as a niche category between the small, fixed lens superzoom bodies (that are one step above the P&S compacts) and SLRs. So Canon is proceeding cautiously, not wanting to ignore the category completely, but also not investing too heavily or quickly, in case it turns out to be a flash in the pan of the overall photography market. Interesting times.