Count me firmly in the camp of pop up flash hater.
+1, check me into that camp. I have no objections to them being fitted to an appropriate body, but IMO this just doesn't include any expensive, well built camera that has a solid integrity. If you want to have casual, direct fill in flash or even general flash, OK, but why on earth bother wasting your money on expensive and sophisticated cameras for what you are doing ?
Pop up flashes are weak both physically and in output. They can't HSS which can be very important for fill, especially with fast lenses. They can't bounce.
I think Canon's attitude is 'if you're spending all this money on a body, and want FF instead of APS when the difference is only seen by the connoisseur what do you want pop up flash for anyway ?'
Nikon. Now Nikon are just trying to ensure absolutely nothing is left off the camera where people might pass it by.
There will be those who say 'I want an expensive camera but a cheap trigger / crap fill' but it looks like they are in the minority as far as Canon is concerned.
Really hope the 7DII doesn't have PUF.
Just seen the comment by the OP; trouble is it is far too weak to be much practical use, certainly a mile from 'pro'.
Don's tissue does work well but doesn't overcome the most pressing limitations.