The system is lacking a true wide angle lens, along with many other things.
The main thing that is lacking is a true will to make a serious mirrorless camera, in order to compete with Fuji and Sony.
Even as a some pros are switching to m4/3 and DX mirrorless Canon still sees mirrorless as a Hello Kitty market.
Dear Canon, just give us a full frame body and consider the competition smashed.
The only Full Frame Mirrorless that makes any sense is the Sony a99. It uses ALL their a-mount lenses. Do you want a mirrorless Canon DSLR with an EVF that uses EF lenses 
I just want the smallest and lightest full frame camera, in other words mirrorless.
And besides, in a mirrorless camera there is no mirror slap, causing vibration. This has a number of advantages as the photographic workflow will be a lot more seamless/uniform, as one doesn't have to place the camera in a 'mirror lockup' mode in certain shooting scenarios to eliminate the mirror slap.
And about the EVF, I don't really care how bad it is. I'll be shooting with live view anyway.
I dont care about AF speed or FPS either. Don't need that for my kind of work.
