I have an idea that may resolve the desire for factions to return while continuing the idea of clans making it a community competition repeatable throughout multiple seasons. The idea is make the factions over the clans. For example, I am in a clan Army of Tools. Whomever the founder of that clan is pledges to a faction say Future War Cult. That clan is now pledged to FWC. Every time clans level up with Hawthorne, they also level up with Lakshmi and get FWC armor and weapons and the like. Now, Faction Rallies. With each clan committed to a faction raid completions by clan and faction can mean a little more because each clan is tied to a faction and there can be bounties and perks for each clan tied to a faction which you can reach. Just as it is now...but tied to factions. You can introduce specific perks for each faction say for example FWC has perks that deal more damage to Vex or Dead Orbit has perks that do more damage to The Fallen. Doing this every season there can be a seasonal reward tied to the Faction which clans can receive for each season.