really important things are always missing for example flash sync speed WE WANT CANON TO GIVE US 1/500 to say the least, 1/160 - 1/200 is a joke, this "new" camera doesnt worth the stretch.
This would mean a radically improved shutter, never ever seen on rebels. If such a thing were to be devised it's exactly the kind of practical improvement that would be pioneered in the 1 series. Not an easy thing to market to the non-technical, who are the majority of the rebels intended user.
I don't know if I'd really be all that bothered in anycase. In a controlled environment the actual exposure duration is the duration of the flash tube burst, much much faster than 1/200th of a second, or even 1/500th of a second.
High speed synch pretty much fixes any problems I've had with daylight fill. I know it requires an external gun, but if you are serious enough about flash then, you'll have one anyway. The HSS power drop won't be any worse than the power of the built in flash anyway.