If Canon (or Canon USA, at least) is having trouble pushing one model, how will they feel about two?
Saying this is taking the situation out of context. You're acting like the 2 models will be comparable to the existing M (one may be and I agree with the rest of your post that a lower spec'd M may retain the 18mp sensor) and that's not even close to the case at hand.
The current M failed initially for 3 main reasons (as you well know); price, AF, lens selection compared to competition. AF was remedied somewhat (to a very usable degree in my opinion and experience) and the price was slashed big time. Now the M is selling VERY well - even with the same lens selection and people are VERY happy with what they have in their hands.
A high-spec'd M (DPAF sensor) would be a totally different animal and if Canon announces the M with 2-3 lenses (11-22, 50-ish prime, and telephoto zoom) then it's not even fair to compare the situations. There will be WAY too many variables that are different and if people can't grasp that then... well... Sounds like a mental deficiency to me.