I'd rather the weapon was good enough on its own. Otherwise you're then tied in to one build or excluded from the potential of the weapon just by Class.

Titans and Warlocks both already have Exotic Armor+Weapon combos, even if some of them be weak and some of them be strong. Titans have Edge of Action + Helm of Saint 14 Warlocks have Necrotic Grips + (Any Weapon of Sorrow, but especially Osteo Striga and Thorn) This isn’t just applicable to these two pairings, as Warlocks also have Speakers Sight which pairs with any weapon that heals, like Lumina, the Healing Auto, and Edge of Intent. Lumina also synergizes with Boots of the Assembler, but it’s on the weaker end of pairings and is really only used for Min Maxing damage, but has gotten a “buff” with the implementation of Song of Flame. You would need to still have someone run well. Titans also have a Synergy between Rocket based weapons and the new Exotic Chest Piece, though, like Speakers, I would consider this less synergistic and of the same caliber as Still Hunt + Celestial as the Rocket Chest Piece has an entire identity based around using Rockets, where as Still Hunt and Celestial were made to stand alone.

3 options for Titan: Apogee - Stasis Rocket Sidearm - Intrinsic: Crystalline Blade - This weapon fires a high velocity precision slug that shatters targets on impact. - Trait: Heart of the Comet - Picking up Stasis shards overflows the magazine. Precision hits with overflowed rounds slows targets and deal increased damage. - Catalyst: Deep Space - Picking up stasis shards overflows an additional round. Overflowed rounds have a larger blast radius. (Titan having access to both Hazardous Propulsion and the easiest time refreshing Stasis Shards on demand for free reloads and perk uptime) Pathfinder - Void Lightweight SG - Intrinsic: Modified Rechamberer - This weapon can be fired as fast as you can pull the trigger, but weapon spread increases along side it. - Trait: Void Compression - While you have a void overshield, this weapon has increased effective range, Reduced spread, and makes targets volatile. - Catalyst: Survival of the Fittest - Repeated precision hits while you have a void overshield extends it duration and grants small additional overshield. (Shotguns are a very, Titan-y thing. It gives no way to generate overshield so other classes will need to jump through hoops to activate it. Synergies heavily with No Backup Plans. Extra effective range makes it viable out to mid-range but the spread helps keep it from being a chaperone with no kill requirement. ) Barren Gallows - Arc Special Ammo Auto Rifle - Intrinsic: Dark Ether Pump - Fires a rapid spray of shrapnel and charged ether. Rounds detonate on impact with repeated consecutive hits stunning Unstoppable Champions. - Trait: Mortal Coils - Final Blows increase this weapon’s damage until its next reload. Every 10 shots fired without missing causes a spark of Arc energy that deals additional damage. - Catalyst: Re-Animation System - When low on health, defeating targets grants a chunk of health and makes you amplified. (An Ad-clear weapon with solid DPS. But what makes it Viable is that Titans can bypass the drawback on its Mortal Coil perk by passively reloading it with Actium War Rig.) Just some ideas. :)