I really don’t think Veilguard played enough with the inter-faction relationship dynamics between Rook and companions.
My favourite fantasy RPG of all time is Wrath of the righteous. And though it doesn’t have as clear cut a background system, it does tag your character with unique dialogue opportunities similar to Veilguard. But whereas most of these opportunities in a romance sense get played out in Veilguard exclusively between Rook and a partner of the same faction, WotR does some insane amounts of in lore connections that I love between you and characters of different factions.
Example, one of my fav playhrorughs was playing a character Romancing Sosiel, a paladin of Shelyn, Chaotic Good goddess of beauty and the arts. I’m a Veilguard style logic, you’d think the most interesting way to play that would be to make a fellow worshipper of Shelyn. Which would be valid. Sure. But playing a devout member of the cult of Zon-Kuthon, the lawful evil twin brother to Shelyn, who is bound by cosmic law to a pact to ort r his sister that results in his worshippers often defending the devout of Shelyn despite their rivalry, and whom Shelyn orders her people to attempt to redeem out of hopes that there’s still good left in her brother? Oh that gets REAL juicy.
Or another example. Lann, the demon blood having Neather whose ancestors worship a betrayed and martyred crusading Angel. You could play an Angel path character and or aasimar heritage character for the delicious conflict of his admiration for Angels between his disgust with his own demonic origins resulting in angst. Or, hilariously, you could pick Lamashtu, the mother of monsters as your goddess, and let him know how hopelessly hot and attractive you find his monstrous features at every opportunity, which a real confidence booster cause him crushing on a feMC is almost inevitable if you’re nice in his direction.
Mostly, I’m saying this, because the opportunities for Crow Rooks dating Emmerich or Mournwatch Rooks dating Lucanis could have been DELICIOUS with literary conventions. But alas.