They just need to contact Fuji to make their lenses in an EF-M mount lol.... problem solved.
It would be interesting. I definitely like Fuji's mirrorless lens line up better than Canon's.
However, I do not want EF-M mount based lenses that cost $500+ and are limited to this one camera. I'd rather it share the EF mount with most of my lenses so that it can be a multi-purpose camera. I would however shell out for a good fast pancake prime. When I'm out with my girls I like having a wide fast prime. I tried the zoom thing and I didn't care for it because it's big, knocks around, etc. We did the Jacksonville Zoo last weekend and I did the whole place with my 5D and 35 F2 IS without a strap. It has a steel ball in it's tripod shoe hole and my belt buckle had a receiving cradle that locked it in. I could pick it up no problem, and drop it back in and the steel ball locked in and off we went. Very handy. Made carrying a dSLR a breeze in the park with my 3 year old and 6 year old and a couple of adults less of a chore to keep it from swinging around or being in the way. Felt like carrying a pistol on my hip instead. Much more family friendly. My EOS-M and 22mm F2 STM would have provided the same opportunity, but be smaller and even more simple, and super super easy for me to hand to someone else to take a few photos with. But, the 22mm pancake is so slow to focus, I don't care to use it as much with the kids when they're excited. Lounging around the house it's fine. But at the zoo and other places, they're running in circles and the little 22 STM cannot focus fast enough reliably, it's just too slow for it, and when I'm really keeping up with them I just stop down for full depth of field and get them that way. So instead, I end up using a full frame and 35mm instead. I could have used a smaller camera and my 40mm STM pancake, but none of my full frame cameras are small. And APS-C + 40mm is too tight for a one-lens solution when I'm out with the kids.
Would love love love an 18mm F2 pancake. I would fall over for that lens. Fuji may end up earning my money due to this if Canon cannot come close soon. I got my EOS-M and 22 STM because I loved the pancake lens, F2 speed, and big sensor in such a small camera. I really like the EOS-M actually, except for how slow the focus is.
The 24mm STM pancake would be awesome on the EOS-M, but, requires an adapter and is basically as big as a large non-pancake prime with the adapter installed. So that's not going to do me any favors.
The M5 on the other hand, with the EF-S 24mm F2.8 STM would be interesting as a "do all". But, I sure would like to have it a wee bit wider and F2. The 22 F2 is really a great lens and I like the FOV and aperture. Just don't dig the slow focus speed. If they could re-release that and it speed up, I'd buy it for sure.
18mm F2 pancake though... Fuji is so tempting.
23mm F1.4 is also super tempting, but that lens is not small nor pancake. So that's not going to win me over at all.
I guess we'll see what Canon does to flesh out the M line. Their latest zooms for the M series are interesting. But my main interest will be the M's ability to merge with all my current Canon line lenses without having to basically have a 2nd system. I'm ok with one lens for the M that is EF-M (22 STM). But if it's a full system to have other lenses that are useful or unique, I'll get a Fuji at that point.
Of course, there's also waiting around to see what Canon will do in terms of dropping a small full frame mirrorless...
Very best,

I've already waited two months for the camera!! To be fair though, I don't know why Canon don't just offer DNG format as well as CR2 (like some others do).
