[Suggestion] Multi-use Keycards

[Varrick1]

I cannot think of a better term for it right now--It's not quite the idea of a "Master Keycard," but in the sense of where you could apply multiple IDs to a single Keycard, while still having different Keycards. Sort of like a Clearance System? Where you can have leveled keycards, with higher levels opening lower ones?

[andersmmg]

I like the idea, not sure exactly how it would fit into how the mod currently works though. I'll keep in mind, and let me know if you have an idea how it would work without getting too overcomplicated