I showed the HoloLens E3 demonstration to some friends, and we started going on about "Augmented Boardgames" (We were playing Dead of Winter), and then spun it further. Eventually we came to the conclusion how awesome a Marvel inspired XCOM game would be with AR (when it comes out). "Iron Legion", concept: control Tony Stark or your own equivalent leader from First Person through the eyes of a HoloLens or AR device, controlling and managing the Iron Legion (the arsenal of Ironman suits/drones), with all buttons and controls around you, instead of mouse and keyboard you'd use hands, fingers, movement.
The basic idea:
X-COM base gameplay, Xenonauts turn-based combat gameplay (other inspirations: Battle Brothers, Invisible Inc, NEO Scavenger, Valkyria Chronicles, Mordheim), but Iron Legion and Tony Stark.
In simplest conceptual form: This. Or this. With the Iron Legion :D