I think the core of the Warriors that needs to be observed before an update would be modernizing them to a current-day context. I'd argue a good introductory arc and final encounters needed to hand the narrative off from. Right now, as it stands, the Warriors start off when you get to Talos and Vanish 0.004 picoseconds after you leave.
So what makes the Warrior's unique? How would you recruit new members if you were made to do so by Ody? What kind of stuff would you suggest as the crimes they commit?
If you approach from a marketing perspective it will break down in to a few things that can feed one another. Hyper-masculine self-help types who listen to podcasts about everything from crypto to workout regiments to tribalism would be the guys the Warriors would recruit from if they were real. I'd set Odysseus and/or Heracles up as podcast or pirate radio show. Two guys unironically quoting Fight Club and Homer (the Greek one, not the Simpson) every episode. Maybe even create a contact like the radio on red side for this where you're breaking up recruiting drives, use a rave/club map for the final mission of the intro arc where you fight the producer of the show while he's DJing or ranting at their underground rally. Just a few missions that establish that this gang is for the disassociated seeking to reclaim their sense of self with violence or a peer group focused on self-realization. They could be anti-supes by simply saying they've earned their might, and didn't have it gifted to them by random chance, genetics, money or a suit of armor. Honestly just imagining the radio shows Odysseus and Heracles could do on that single point would be fun.
While the Trolls are a bunch of drug addicts believing in violence for its own sake and the Outcasts are mutants seeking a sense of belonging the Warriors counterbalance by being natural based with some magic artifacts sprinkled judiciously to the higher ups. This gives you a great conflict point with every group, honestly and a chance to build and bill them as the villain group closest to not being villainous. They fight with the Circle and Tsoo to get supplies by beating up a bunch of Harry Potter/80s Ninja Movie LARPers, they directly compete against the weirdo psuedo fascist types of the Council and 5th for disassociated young men and women to recruit as well as funding, Im sure. You could see them start to show up in the red areas of steel and skyway to disrupt Trolls and Outcasts as a point of pride, they're in a very unique spot in terms of CoH in terms of their own morality and ethical considerations which would make them fun to write for. A re-tooling of Spanky's boardwalk to include a small carnival that serves as an ad-hoc powerbase for them would certainly give them flair and make Talos feel a bit more alive as someone earlier suggested.
Also, their logo sucks
This is just awful design. Word-Art has better stuff. I'd love to see what an artistically talented and excited CoH fan could do to make something better to throw on their backs, because this thing is just the absolute worst logo in the game.