I don't know about others in the community, but whenever I played the weeklys without my friends, I always end up in a group where one or both of the other members in the fire teams leave, leaving me to solo the strike on my own.. I thought matchmaking would bring in other players if such an event occurred.. It has yet to happen for myself.. Now unless the addition of other players applies to Nightfall then ignore the first paragraph of this post, and Bungie please add such a thing for the Weekly Heroic strikes too.