svefro Thank you for suggestion. That idea pops up from time to time, but we deliberatly chosing not to add this funciton. First of all, it is still easy to do the same (first select all, then confirm), but we are not encouraging this behavior, since cost of mistake is high. Wrongly accepted faces can lead to significant degradation of accuracy of next suggestions, and after confirming those, everything might go completely sideways, and repairing the situation would require much more work - manually check all the accepted faces and look for wrong ones. It is much easier to properly checking it when they are suggested, rather then look thru whole set of already accepted.
Adding this button will encourage users to press it wihtout even looking.