Some major use cases would be real time (and discreet) language translation, maps displayed directly on the world, and holographic video calling. Real time and

Some major use cases would be real time (and discreet) language translation, maps displayed directly on the world, and holographic video calling. Real time and discreet language translation is a killer feature IMO. It could overlay native text on foreign text (think signs, menus, etc.) and also display native language text in real time as someone speaks in a foreign language. In a perfect world it would be like cyberpunk 2077 where it also locates the speaker in space and places the text next to their head / audio source.