I would love to see the sword as an all-inclusive relic in CE, it opens the door for endless possibilities, like holding positions as the sword bearer, or having your team provide fire while you destroy an artifact with the relic. It's a totally plausible idea too, because my theory is that Crota's End is going to send us back in time, prior to the Hive's reign on the moon, when guardians were trying to prevent them from attacking on a multi-planetary scale.