Be creative here there are no wrong ideas.
I would like the Spartan laser to be a weapon personally, just called something different "Charge Rifle" was a name I had in mind
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A paintball gun that fires pheromone filled projectiles. Upon breaking the chemical will cause Hive my members to hump each other like the Marines in the press scene from [i]Jarhead[/i]. In addition to normal glimmer and engraved drops these Horny Hive will drop loot similar to Ether Seeds, Black Wax, Blue Polyphages, and Resupply Codes. Use them will trigger the humping effect on Cabal and Fallen races. Sounds like it should be Valentine's Day event.