I have these Birthright combinations planned so far...
Subaki x Oboro
Hinata x Setsuna
Silas x Hinoka
Saizo x Orochi
Hayato x Sakura
Ryoma x Kagero
Kaden x Hana
Kaze x Rinkah
I Have no idea who my female avatar should pair up with, she has +Str and -Luk and samurai talent. Would avatar x Jakob work? Also maybe Asama x Azura.