Was looking at Hayley decks, and was noticing the rise of Cache. It made me chuckle to myself that Cache is only ever used in Shaper and Anarch, never Criminal.
I'm curious if there's any other cards that are like this. Cards that are by the vast majority used out-of-faction, and very rarely in-faction. I think I may have to disqualify the mini-factions' cards here, otherwise Apocalypse, Multithreader, Security Nexus, and Shrike would potentially all count. Nothing really comes to mind, the closest being Mimic/Corroder/Yog, except that Anarch plays those cards, too... It's pretty weird to have a card be powerful out-of-faction, but not in-faction.
Also since it's on-topic, why isn't Cache used in Criminal decks? My guess is: a) Criminals don't need a Virus like Noise does. b) Criminal has no in-faction way of leveraging installed cards lying around, and c) Criminals have memory issues most of the time anyway, so having an extra Program installed doing nothing isn't that good. I suppose it's also true that Easy Mark exists and does everything Criminal would want Cache for, only better.