Twincestuous is still my bet.

Thanks for the corrections -- they weren't intentional oversights. I was just doing this half based off memory because it would take too long to double-check everything.

Oh right, Gheb is an Ephraim-route-only thing... ew.

Roy/Lilina and Eliwood/Ninian are so bizarrely story-integrated that it's weird they didn't just go ahead and Sigurd 'n' Diadora them.