With all the heroes getting their own profiles usable in infinity, what are the odds of them getting a their own small sectorial, where we can only really use these heroes as a mercinary company? (and maybe a few additional merc units.) I think this fits the lore of the lattest expansion.
Depending on how the narrative of the "Renegade" expansion runs, we might see them as part of the long-anticipated White Company.
I don't see any point for adding any more tiny sectorials, there's plenty of them already. I'd rather see the opposite - some scenario packs for already existing factions. Like Hannibal's crew adventures, or another Knauf's suicide mission...
I feel like this sort of idea or Outrage is where Closed Battle Lists would excel. A very fixed group of actors that just need to come together one way to be a playable army.
if they are going to be mercs for every human basic faction you can literally build an army around them by using your vanilla faction of voice and add some remotes, for instance. surely no fire teams this way. So CBLs would indeed be a way to handle that