You nailed the setting rather good :)
In play I want to go using freeform but there will be some kind of character creation using the rules.
You got Seven Houses:
Defiler - the angels of the sea and temtations
"I can show you things that will fill you with wonder. Just take my hand and I'll change your life forever."
House Lore: Lore of Longing, Lore of Storms, Lore of Transfiguration
Devil - the angels of dawn
"Follow me and I will give you your hearts desire. Worship me and I will make you a god."
House Lore: Lore of the Celestials, Lore of Flame, Lore of Radiance
Devourer - the angels of the wild
"It has been too long since I tasted blood on the wind. Tonight we hunt once more."
House Lore: Lore of the Beast, Lore of the Flesh, Lore of the Wild
Fiend - the angels of the heavens
“You have questions my friend, but are you prepared for the answers?"
House Lore: Lore of Light, Lore of Patterns, Lore of Portals
Malefactor - the angels of the earth and creators
"I know you have been hurt. I have something here that can make your life better again."
House Lore: Lore of the Earth, Lore of the Forge, Lore of Paths
Scourge - the angels of wind and life
"Nothing can protect you forever. So don't worry about forever. Worry about right now."
House Lore: Lore of the Winds, Lore of Awakening, Lore of the Firmament.
Slayer - the angels of the dead
"Love me or hate me as you will, but live, now and until your final breath. In time we will meet again."
House Lore: Lore of Death, Lore of the Realms, Lore of the Spirit
And then you got the Five Factions:
Faustian – Wants to rule the world
Cryptic – Wants to find answers to the Big Questions
Luciferan – Wants to find Lucifer and follows him
Ravener – Wants to unmake the world
Reconciler – Wants forgiveness