It just feels like this camera was more of an attempt to hit a price point without trying to hit features of any other existing Canon camera rather than a model directed at a specific user base.
They avoided competing with the 60D, t4i & 5D3 by lacking live AF from the t4i, no headphone jack like the 5d3 and no tilt screen of the 60D & 4ti, no clean hdmi out, and no dual card slots.
For photography it seems weak as it is lacking a decent AF system (even something like the 7D), no dual card slots, or at least a single pro CF slot if you can only have 1 (such as the 7D), only 3 bracket exposure vs 7 of the 5d3, way slower than the 5d3 or 7D, no flash, no 100% view finder, only 1/4000 max shutter speed, only 1/180 max flash sync, and usb 2.0.
Then it seems that since this resulted in a body to inexpensive, they added gps & wifi which few people need in a DSLR rather than adding back some of the specs they removed to not compete with the other cameras.
It's a camera that seems weak no matter what area of photography you are in:
For sports - too slow and bad focus system, no CF or dual card slots, No 100%VF, no joystick, limited controls
For Wedding/Event - No dual card slot for backup, poor focus system, slow flash sync, No 100%VF, no af joystick
For video - No live AF, no swivel screen, no headphone jack, no clean hdmi, no dual cards for backup or overflow, no silent operation like the 5D3 or D600
For studio/landscape - No 100%VF, No Backup card, only 20MP vs the D600 & D800, limited DR most likely
For Travel/consumer - No popup flash, no card backup, no swivel screen, no live af, no touch screen
What/who is this camera for. This is clearly Canon's attempt to produce a camera without stepping on any other camera's toes.
Instead, the best camera for each item never include the 6D:
For sports - Buy the 1Dx, 7D, or even 5D3 (don't buy a 6D for this ever)
For Wedding/Event - buy the 5D3, 1Dx, then maybe a 7D or 6D (both have some negatives)
For video - Sony A99, 1Dc, 5D3, 1Dx, 60D, t4i, then maybe a 6D
For studio/landscape - 5D3 or go Nikon because they are the best for this with the D800 & D600
For Travel/consumer - Nikon D600 or 5D3, t4i, then maybe i'd get a 6D