I think with a GOO you could maybe hope they forget about you or are just bored/whatever plans they have won't end up concerning a scale you really care about.
Regarding mechanics, firstly I think the archfey should focus on the chaotic, fairy logic type of approach. But I also think one way to integreate them is to have each pact provide an alternate way to get inspiration. It's less than I would like, but it's something potentially interesting.
Ugh, I hate the chaotic thing.
If you read Fairy Myth you will notice that they are *very* Lawful. The logic of their laws is just utterly alien to us. But if you find a rule out that binds them, you actually have power - because they will *never* break it.
Now, *trying* to enslave a Fae is an absolutely terrible idea, but it *is* possible.
But I am very happy that Alignment are invisible and I do not have to see the "Chaotic" label anymore.
Fairy-rant over. I think I read it before in one of the Books that most GOOs don't even know you exist. You mostly get insane because you had the bright idea to actually invade the mind of an eldritch entity.
Devils use you as agents for their schemes while waiting for your death, so that you will be another Lemur.
I am absolutely Pro-Fae, so I am probably not the best source to tell you the problematic side of making a pact with them..
Aside from them following (seemingly) nonsensical rules and partaking in court politics you can not grasp.
Thinking about it, they do seem like noble through the eyes of a peasant.
