It seems like a setup for the next season. Maybe at the end of this season the renegades bring in solid evidence against Cobra to Hawk and he uses it to form the official GI Joe unit. He says something like "It'll take more than the six of us to bring down Cobra." Scarlett responds with "We've met a few friends along the way who can help..." Then we've got a full active roster for the next season. That's my guess.
I'm enjoying Renegades but I wish they'd get rid of the monsters and the super powers. My attention drifts away when that stuff comes on.