The reason the T4i is not that good is beacuase of the video AF fail. Can anyone tell from the leaked specs whether the video AF will be fixed? If just this one very important feature is fixed, that is enough to justify a new model. Otherwise, I sat on the fence with the t4I, will stay on the fence with the t5I, too.I assume you are angry that it doesn't smoothly track moving objects? If so, expect to be unimpressed with future offerings for the next decade. The shallowness of the DOF makes creating a useable video AF nearly impossible. The camera has to decide which high contrast area to focus on when there are numerous options and then smoothly transition to the correct one. Except then people will complain its slow, so it makes those transitions fast, thus looking jerky.
Basically, the AF tracking system of Canon's most expensive DLSR (at $6k) can lock focus on an object at 12fps for several seconds. Yet, a good video AF would have to do the same at 30fps or 60fps for minutes at a time. Ain't gonna happen on a <$1000 DSLR. If you want video AF, you want a camcorder with a small sensor.