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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It's kinda stupid(and I know GG has it) but a throwing knife, it would be cool like, your running around crucible reking fools with yo pulse riffle or any other primary and then turn a corner and throw a knife, wouldn't that be -blam!-ing awesome?