Welcome aboard, Maximillian and Coan! I'm really pleased about good ole Crow's return. Don't worry, Rotipher, Gert's not omniscient...yet.
I personally see no problem with the cameo appearances myself, alhoon, though you might want to discuss beforehand with the DMs when his plans intersect with ours. Will you create another PC who's part of the FoS, or at least involved with them?
Guardian of Twilight, are you planning on joining with Nathaniel, or with a new PC? If it's Nathaniel, you might PM Moral and Rotipher to discuss how exactly they've all been getting on. My main concern with Nathaniel is him having a good reason to still stick around- would he have any qualms about working with them? Or would he be a dupe for the FoS, someone they're using, while promising to help him in his desire for revenge?
His only real danger is if stupidity is contagious and lethal. In which case, we’re all dead…-Gertrude