Awesome, I love the idea of building a working library of dialogue to make use of. Technically mimicry would mean having no actual understanding of the phrases actual meaning so it would have to be coincidental to say something useful in context… but it would be such a fun mechanic I would find some way to hand-wave it into making sense.
Might also be fun to extend the mimicry to physical mimicry too. Maybe picking up something that you have seen X number of times. Though that would add even more data tracking, hehe.
Ah ok, they already have a built-in hand-wavey mechanic to explain it. That’s handy. Extrapolation from their inability to think creatively and only mimic, it seems like that would indeed set up for physical mimicry too. But that would probably get old fast, since it would have to be at the expense of gaining stuff naturally with levels. You’d either have to be trained everything you want to know, or have the DM set up encouters that makes sense for picking it up eventually. Maybe fun for the first couple levels, but just unnecessary tedium as it goes on.
Certainly makes more sense fun-wise to retcon the scope of the curse to a more limited handicap. Something that fits the scope of a single hardship slot.