GIS has made strides in the outdoor environment, and now it's moving indoors.
This tool has all kinds of potential to up the collaboration game. Aside from the obvious features like indoor navigation, with the appropriate extensions ArcGIS could really activate indoor spaces.
One use case would be to find open work spaces. Kind of like how you can find open parking spaces in the outdoor environment. As we move toward open work spaces wouldn't it be nice to see if there were a work spaces available at the university library before you hiked across campus. At the very least, this tool could give you the ability to map the fastest route to your study buddy.