FitzTheRuke
Legend
Aside from how you can just use the stuff you like, there is also a thing called "schismogenesis". I won't get in to the whole theory on my phone, but my point is: It is often nice to have an example, if only so you know what you don't want.Is that usable, though? Does it count as "generic" if I have to.ignore and/or rewrite the lore. Why shouldn't I just start from first principles, rather than have to convert lore?
If there is a particular thing that you don't like in FR lore, you may be "forced" to think about what you would do instead, in its place. This leads you to come up with things that you would never have thought of otherwise.