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 true metallic sword (not like the elemental swords. Maybe half the damage or something.) More agility with it then using a hilt of the current swords. It can be damaged beyond use. More damaged it is. Less damage it deals. You can take it to shaxx or maybe the gunsmith. (Actually... The sweeper bot. Definitely the sweeper bot) who can fix it back up to new with a material grind.