Graphics comparison videos for PC, Xbox One, and PS4 are a big deal on YouTube and in the gaming community at large. It would be a big help to be able to capture all the in-game footage simultaneously from all systems utilizing a single "master controller". It would seem to me that demultiplexer circuit could be utilized to take a single button input and output it to PC, Xbox One, and PS4 all "at once" with minimal latency to make capturing synchronized game footage a reality.
Fan of the show,
Drew (@thisoldeconsole)