So I finally finished a 500 point force of Primaris Space Marines. Here are a few images of my Falcons of Ruin, who are not a Raven Guard successor chapter. If they were, per the FAQ they could not take the Raven Guard Warlord Trait. So they are a special detachment of Raven Guard, with a camouflage color scheme.
The current status of the Falcons of Ruin.