I want a system-neutral layer I can add to Call of Cthulhu character creation which gives every PC connections to, information about, and opinions on the other PCs in the manner of convention event pregens. It should only take a few minutes to implement during chargen, and in my head it's kind of like mapping out relationships in Fiasco.

Before I build one, has anyone already heard of a tool like this? And is it a stupid idea, or one that might have some legs?
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