Looking at the list and arbitrarily making a judgement on who’s “due” for a box, I’d present O-12 vs nomads, whose rivalry was highlighted in the team zed book. Granted the character was an aleph agent posing as O-12 but still highlighted how much nomads don’t like them poking around their motherships.
I found another Hate relationship. Ikari and Nomads. Ikari forced Corregidor mine workers to work to death and Corregidor sent in forces and killed all Ikari. Ikari has a "shoot on site policy" with Nomads and Corregidor in particular.
True, but as others have pointed out, NA2 armies don't lend themselves to 2 player starter boxes particularly well. They're by definition a mix of other factions, which makes them a bad choice from a boxset (lots of unwanted overlap between factions) as well as a sales (they've never been particularly popular with a broad player base) perspective.
I'm coming back to the game after a long hiatus and have no reason to think this would be the case but black hand vs oss would be very cool
I disagree. They could do new troops that are available to most of the NA2 Factions. Maybe one of them in particular (Ikari) They can do Brawlers as the Line Troops. But then All New troops for HI, Skirmish, etc. They would be available to Ikari, Druze, Dashat mostly and then limited amounts in White Company and Star Co. Edit: They might even kill two birds if they are JSA troops that are available to them too. On another note: While Ikari gaining Kiiutan is welcome, it would have made more sense if it was Kuryami Ninja, Kyojin, or Nokizaru.
It's not going to happen, but I'd love Ikari being reworked and rebalanced into a real faction. The most fun bit of lore to come out of the uprising. Just an unrepentantly awful crew of assholes. But it's not going to happen. CB refreshed a bunch of models from the faction last year, and even then, the only change they could be bothered to make to it in Army was to add in a trooper that has been discontinued for years.
When it comes to NA2, the best implementation would be to have two factions who contain units available to the NA2 force in the starter. Like Qapu vs Invincibles would give you a Dashat force if you didn't split it.