There needs to be more synergistic exotic armor or weapons like to Aeon, RatKing . TO add a new flavor and support the cooperative play. As far as I know , Aeon and Rat King are the only exotics directly designed for party synergy. To add a new dimension to cooperative PvE ,to move the game away from a solo gameplay style and enhance class diversity. New exotics that interact with each other could be introduced—such as Aeon-like gear with six different unique traits (For raids), Or weapons and armor that encourage team synergy. Alternatively, existing exotics could be updated with new synergy-focused perks during reworks. What I mean by new synergy focus is, for example, a Solar Warlock exotic having a synergistic effect if it's in the same party as an Arc Titan exotic and a Void Hunter exotic, and they perform certain actions together to activate a unique synergy effect(Like a raid mechanic). Another example could be: if one player uses an exotic Stasis weapon and another player uses an exotic Solar weapon, after hitting the same target a certain number of times, they could generate whirlwinds or mini-whirlwinds that deal damage to enemies and persist for a few seconds. Of course, these synergies should not only provide rewarding effects but also create disadvantages if executed incorrectly. I hope I've been able to explain the synergy concept I have in mind clearly.