Hello!
I just caught up with the story posts. I have, however, missed a lot of the planning and discussion, so I must apologise in advance if the following suggestions and ideas have already been worked through:
Military and abilities:
-Using force walls: The two ends of a wall need to be parallel and un-moving. Depending on how thin (rectangular) you can get the force wall, you can plate two force wall seals on either end of a sword and give it a cut-through-anything blade edge. It would be fun when the opponent tries to block or grab the sword.
-Artillery: Can force walls intersect? If not, how closely can you make a volume with one open end out of them? If not, use MEW to dig a slanted pit into the ground and fit metal cylinders into the pit to reinforce the walls. Place a Macerator loaded with coal into the pit or force-wall volume. Projectile on top. Ignite. The pressure generated by the fuel-air explosion will drive the projectile out of the cannon. Due to how larger cannons scale, you'll start with the biggest weapon design you can manage. This is ideal for bombarding fixed positions. Using single-use MEW pits, you can prepare them on the field within a few minutes, giving you an effective rate of fire. If you manage to fashion the cannons out of indestructible force walls, you can use stupid pressure-cannon designs like the Voitenko Compressor for intercontinental ballistic bombardment.
-Macerators: A burning log is nice. Finely powdered flammables will ignite without a fire however. Also, they create a whole domain of chemistry so far unavailable to ninja. For example, the Macerators can be used to prepare a reactive powder, like iron fillings, aluminium or magnesium or even alcohol. Very carefully mix the powder with an oxidizer such as sulfure dioxide or permanganate. Seal the products in a storage seal. Release to fix situations with proper firepower. Uniformly divided particles also allow for some very strong ceramic plates, to be used as armor.
-Explosively formed projectiles: Metal disk. Explosive charges. All you need to make a lethal projectile out of a dinner plate. Inverted cones will create Monroe Effects that shape the metal into a penetrating jet. Cut the disk to create a hail of shrapnel. These can be used as mines (think Claymore mine) or as improvements to Kagome's directed explosives, but use the explosive force more efficiently and are lethal at greater distances.
Civilian:
-Fertilizer: No mention of peasants carting around cow manure. They likely have a very basic concept of soil health. Enriching the ground with nitrogen and phosphorus will double or triple yields. The Haber-Bosch process can make this on a large scale out of atmospheric nitrogen and hydrogen. Hydrogen can come from aluminium plus sodium hydroxide in water. You can use an iron catalyst but can skip the high pressure/temperature environment by using macerators to increase reaction rate followed by rapid cooling to extract liquid ammonia. Leaf's economy can switch to exporting ammonia and become an agricultural powerhouse. Ammonia also makes decent... war... chemicals.
-Rapid cooling: Implosion seal. You'd need a one-way seal or valve. Suck the air out of a compartiment, eject it outside. The lower pressure translates into lower temperature. Depending on how tightly sealed the compartment is and how much air is available, you can go from vacuum freezing to gentle air conditioning. Rapid cooling allows us to extract liquids out of the air, from water to liquid oxygen. The condensed products do not need to be inside the compartment: cooling the inner surface of a metal plate can allow frozen air to form on the outer surface. You can freeze-dry food.
-Concrete: People use wood. Its terrible and bad at insulation or humidity, which breeds diseases. Wood rots and is weak too. Widespread availability of concrete will improve everyone's lives. Concrete is not hard to make and macerators allow for very effective firing of kilns and furnaces. Getting ninja to MEW up homes is a bad waste of their specialized skills. Get the civilians to do it for themselves, all they need is a genin to prime the air pumps and replace the seals.
-Metals: Do you even know what temperature a finely misted charcoal and liquid oxygen fire can reach? Rapid cooling valve with the implosion seal can be used in reverse to pump air into a chamber. Leaf will have access to improbably high quality steel. This allows for cheaper agricultural tools, lighter weapons and armor and a low-key industrial revolution with gears and steam engines.
-Roads: People walk on dirt paths surrounded by murderous forests. Use MEW to build walled roads. It will help people. The Romans did it for a reason.
-Seal scribes: Okay, civilians do not have access to chakra techniques. Okay, they do not have Hazo's copying skills. They do learn calligraphy, however, and just teaching a man to write seals all day long until he gets good at it costs a fraction of the full educations and training of a seal master. Cut out the bulk work and allow seal masters to focus on less mind-numbing tasks like research. The civilians will be eating better and living in warmer, stronger homes, so this might free up a bit of labour to be educated.
Story and characters:
-Kagome: He should not be on the field. He should be teaching sealcraft, shouting at students for wonky handwriting and scaring little genins with stories of the Out, surrounded by walls, people he knows and psychological support staff. He should be removed from stressful situations because PTSD and hyper-paranoia have and will put him in bad situations. Every effort should be put into warming up Kagome to the idea of delegating the safety of team Uplift to others, so that he may accept his stay-at-home role. I believe its priority #1 before the team returns to Konoha.
-Chunin exams: The team should prepare themselves to propose and undergo formal testing. Working on reputation to convey their abilities doesn't work when no-one's heard of you. Imagine how differently the situation might have gone if Team Uplifted presented themselves at 'four chunin and a jonin' instead of 'bunch of capable missing-nin'. It would be a fun story arc too.
-Teams: It is in Jiraiya's best interests to split the team up in between major missions. A major mission would require coordination, so people who work together is fine. However, for every A-rank there's a dozen B-rank missions to be assigned. For these missions, the team's skill and experience is wasted. Assigning a genin group to Keiko, Hazo, Noburi separately if temporarily will allow up to nine Konoha ninja to gain practical survival teaching from someone who lived in the wild for hundreds of days and had to deal with life-threatening situations, per mission. So, the team must get ready to be separated for long periods of time. They must also get ready to have a jonin assigned to lead their group on major missions. Minami is a sign of things to come.
-Keiko: I feel sorry for the girl. Is there only one eligible Nara bachelor? How long can she hold off a marriage? She's only like, 13.
-Noburi: I don't recall if using ice instead of water for his abilities was properly tested.
-Hazo: Big mouth, causes problems when he dives into explaining plans with redundant elements or come off as ignoring others' knowledge, for example, when Noburi commented that Hazo ignored Kagome's winter survival knowledge. I propose that Hazo be inspired by scientific papers and prepare an abstract for his speech before he starts. An abstract in this case would be a résumé of his main talking points and suggestions. He's got the whole plan in his head before he speaks, so why not preface it with a statement that allows those he is talking to to quickly interject and add something before he starts. This was he won't give redundant details, assume wrongly about his interlocutors' knowledge or focus on the wrong thing.
-Akane: She's taking the team's departure and unexpected return very well. A little too well. Might exploring her feelings more deeply, instead of what she says she's feeling, be of interest? Hazo's maybe not the best person for this. He's putting his girlfriend on a pedestal and that's not good for either of them.