The APS-C DSLR 100D weighs 407g with battery and memory card.
In comparison the Sony A7 full frame mirrorless camera weighs 474g with battery and memory card.
Is Canon capable of making a full frame DSLR that weighs maximum 90g more than the 100D? e.g. put a full frame sensor in to the 100D body, get rid of the built-in flash and replace the fixed screen with a swivel screen.
If there is such a product, I would be seriously tempted considering the advantage of DSLR vs mirrorless camera : longer battery life and better AF performance of tracking moving subject. In addition the relatively bigger size of DSLR actually makes it easier to hold when paired with long telephoto lens.