I agree with almost everything you said except I don't feel like kait would be against the war at all, the Swarm are literal monsters that want to kill everyone, her entire village has been destroyed and everyone she knew is now a twisted monster. She has more of a drive to fight then JD or Del ATM. Say what you will about the COG being oppressive but they are best chance for humanity to combat the swarm.
You misunderstand. I can see Kait not being completely opposed to the Swarm war but it won't just take her kind of pacifist attitude(she is the one who suggests their other option would be not getting caught in Act 1 when Oscar probably didn't even think of that) and dislike for fighting(she seemed more occupied with the thought of why there were so many security DBs in Settlement 5 and didn't answer Oscar's question about not having fun), and that she sees it as senseless slaughter, away from her.
It could be used to show that there is a conflict between her desire for revenge and those two aspects of her personality(which can be used for some dialogue).
And while I'm not disagreeing that the COG is probably the best chance to survive and for Kait to get her revenge(or would it be?), solely focusing on that aspect would make her rather boring and it would also be the best opportunity for Kait to be corrupted by the COG and turned into something she isn't. I prefer Kait with the Outsiders, for one becausd I believe her to be a more flexible character if she's with them instead of the COG turning her into your lame straightforward soldier, and because it's an environment she knows. Ask yourself, would you go to the organization you view as oppressive and know no one of and nothing about what life is like in it, or a familiar environment which you grew up in, had you lost everyone? I know I'd go with the second option.
Even so, I think the favor tips towards the Outsiders with Kait. She doesn't know Oscar is still alive but if she does join the COG I expect her to ditch them and whatever they put her up to the second she learns he is still alive to find him.
And I'm not sold on the COG really being the best option here. With a despotic leader throwing hundreds of robots, 10(11 if you count the one in Speyer) Guardians, three(four if you got them all) Kestrels, two Condors(number lost not including the one that went down near Tollen Dam) and a Vulture after four people in pursuit of an unfounded assumption and still fails to even harm them, I really ask myself what people like about it so much and whether an alliance or joining with them would be beneficial(especially when their own forces can turn on them). Might even be better to look for a possible UIR remnant even if they´re probably not good to speak to as a Tyran(an Outsider may have more chances than a COG representative though).
Lmao rather see literally any other character develop.
God knows JD could use some major development. Absolute generic beast, down to the khaki pants.
Anyway, on topic, personally I don't know if I want to see Kait go the way of being less militaristic. I know she was raised as an outsider and views the COG as oppressive, but I think a cool flip would be for her to be the opposite of that. With her having seen what the Swarm did to her mother, I'd prefer her to join up with the COG and become as gung-ho about defending humanity as possible. She should actively want to get rid of the Swarm from a personal aspect as well as a professional one.
It would be a cliché but imagine Kait is the Outsider who embraces rule and law and becomes a Gear. Meanwhile, even though JD would re-up with the COG in Gears 5, he's the son of a COG hero who decided to go AWOL and joined up with people who opposed the COG. It would be a nice flip of personalities and walks of life.
I can't get behind this. I don't realistically see that happening and am 99% objectively sure Kait won't want to have anything to do with the COG. Plus, even after Reyna's death this would be rather unprecedented especially looking at how Kait seemed to go against the restraints put on her by Oscar and Reyna wanting to know her safe, I doubt she'd suddenly start following rules.
I don't want her militaristic because of how it makes her stand out and I think it's a nice change from having only soldiers, and it gives her more flexibility in her acting(unconventional methods like using the turbine as an improvised way up) and character wise.
And it would be more than just a little bit cliché.
If we make anyone the law and rule respecting Gear(which wouldn't fit any of the three) I suggest Del. It was him who wanted to leave the COG(most likely after Settlement 2) so if he was to make a turnaround it'd be an interesting flip(unlike with Kait which would be silly) and give him development he badly needs.
Edit : The other reason I don´t want Kait militaristic is because she says different things, or rather doesn´t say some. I don´t know how you feel but it gets just a tiny little bit cheesy after a while when everyone constantly says incoming x, incoming y whenever a enemy is marked. I also like that she isn´t really into these military terms.
And her suddenly starting to care for the rest of humanity wouldn´t make sense either. Most of them are the COG´s population which, even if she doesn´t hate the COG as a whole and only their leadership, she has not a single reason to care about and probably doesn´t care about. It might seem selfish but she´s probably been raised that way and she´s not the type of person to care for everybody even if she doesn´t know them. Remember what she said in Act 4 ontop of the dam(which kind of leads me to believe the relation between her and JD could
still be rather fragile).