Being able to stand side by side with people to work on something rather than broadcast my face into their face. It's just... so much more natural. All of the social cues like concentration, wandering away to think, nodding your head along with a group conversation you stumble upon and are now actively engaged in. If I can bring my data/apps in but keep them private - sold
Interacting digitally with the environment - this is a new one but I think it's going to be huge. Anything involving maps or layouts, you can plan it prior, and then overlay it on the day when you get on site. AR on a phone is meh because you have to hold it up, but when it's just a gesture I think it's going to open up whole new use cases that were just out of reach (pun intended)