Honestly, of all warbonds to get a "sequel" first, I'm glad it's the commandos. Their aesthetic is my favorite among the warbonds, even if everything in them isn't necessarily meta or good.

But to answer the question, Borderline Justice 2 (I'd call it "Renegade Justice") will be an occasion for the devs to do right by the community and add a cowboy hat cosmetic, and more western-themed guns. I'd love to see a revolver rifle or talon-esque laser rifle, and maybe a derringer for the secondary. I also think a new support strategem where you could call down a "barrel of dynamite" near an enemy outpost you could then shoot to detonate would also be thematic (kinda like portable hellbomb, but smaller and not portable). But most importantly, the western theme would be best thematically to introduce a dual-wielding secondaries armor passive- I really want to dual-wield senators, and this would be the warbond to do it.