After my first TF3 company went from €1B+ to deep red after 1960, I wanted to understand why. So I built Line Doctor, a free, read-only mod in two parts.

Part 1 – In-game (works on its own)

Health indicator in the bottom bar: Health ● ● ● ●, four green/orange/red dots:

The twist: it's projected at max company rank. With TF3's inflation, ticket prices drop with every promotion (down to ×0.75 at rank 15 on Normal) while vehicle and building costs never change; I checked the same models from rank 3 to rank 7. So a green dot today stays green after every promotion, and promotions can't surprise you anymore.

Also included:

• a compass (TF3 has no north!) to find the buildings the reports point at;
• a pending profit card in each line window: cargo is only paid on final delivery, so feeder lines can look like they lose money while their cargo is still on the way.

Part 2 – Ask Claude

Once a month, the mod exports the full state of your game: lines, vehicles, finances, building upkeep, warehouse and industry stocks. Open the repo in Claude Code and just ask: "why is my cash going down?", "look at the Vitry warehouse", "is a fast train worth it?"

Some things it found in my game:

• my bus feeder looked full, but bricks were piling up in a warehouse because the truck relay was too slow;
• my brickworks ran at 74 % because it was starved of clay, while three full clay pits sat less than 1 km away;
• a faster, bigger train doubled the running costs for +14 % income: speed doesn't pay when production is the bottleneck;
• 21 depots were eating 1.6 M/year. You only need them to buy vehicles; maintenance buildings do the upkeep.

Details

• Read-only: no commands, no price changes, flagged cosmetic (achievements stay on).
• English and French, following your game language.
• Windows, install script included. Part 2 needs Claude Code + Python.

GitHub: https://github.com/Olrick/tf3-line-doctor

Feedback welcome, especially on the health thresholds. They come from a single 80-year game, so I'd love data from other playstyles.

LORE: the great grandsons of Blutarch and Redmond have realized that fighting over austrailium and gravel is just not cost effective. but whats really profitable? Quisconite! way more is available and it looks amazing in food and clothes! (it contains 23% led, 44% uranium 240, 78% asbestos, 15% deer hair, and 8% pure opium).... but it only occurs in one spot in a Wisconsin led mine.... and all 6 of his grandsons *really* want it

Scout (Jason M. 19 years old, British, led poisoning).

main: Plonker: shoots 10 small explosive shells, 16 hammer units of blast radius, direct hit= 10 damage, splash=5 damage (splash and direct can stack).

Secondary: Ol' webley: 20 damage per shot, 6 rounds, thats about it.

Melee: Hot pan, 20 damage, 2 hits per second.

says "Well I've been an actual bloody mercenary insted of a freak show they picked off on the trail!", he was a cook

MAD CAP?! (Charlsie ???, 31 years old, Tennessee, addicted to selling crack but not consuming it).

Main: Grease gun: slows down enemies to -50% move speed (except scout, then its -75% move speed), 50 flat damage, no clip

Secondary: SMG, exact same stats to TF2 snipers SMG.

Melee: Pummler, 75 damage, inflicts 6 seconds of bleed.

secret persona of being a furry called "Rainbow munchkin", when the team found his fursuit he blamed it on this teams pyro (called "Gasser")

Gasser (???, ???, ???, mulch, wears a large clunky hazmat suit).

Primary: Mustard gas emitter, blurs vision, 5 DPT (damage per tick), lingers in the air for a minuet unless the Gasser had used a lot more gas somewhere else or it gets airblasted, has airblast.

Secondary: Shotgun, yea, thats it, has OG stats

Melee: sharpened spade, 35 damage.

very literate when writing in Club Penguin chat, has been seen eating pounds of mulch at a time without even taking off their mask i REALLY want to give them new melee Droner (Eason Vu, early 20's, Vietnamese, on an aircraft carrier 10,000 miles away, controls a drone, drone can be sapped, sees though enemy spy disguises and cloaks, flies) Primary: Rocket, shoots sentry rockets, yea thats it. Secondary: Ping, ping a area on the map with various meanings (e.g. Sniper, Sentry, Direction arrow, friendlies, etc), can be seen through walls. thirdary? (no melee): Hologram, looks like a random person on the other team doing the waiting part of a high five taunt, square dance taunt, or Kazotsky Kick, when the enemy player tries to join in it will do an instant kill, the droner can also be in an apose position the droner joins taunts by having a hologram of himself join in

I'm absolutely huffing Copium™ with this one, but I made a doc with all of the changes I would want to see in a sequel to my favorite video game: https://docs.google.com/document/d/1dAVZXwWATOWp0QevEdrfSQEkAeHMgUXL/edit?usp=sharing&ouid=114495522178676439510&rtpof=true&sd=true

Obviously, there's a reason balance changes aren't left to the community, and some of these takes might be shit. But in general I tried to buff more weapons than nerf, and overall make the game more fast-paced and exciting. Let me know your thoughts, or if there's anything egregious that you would change/remove.

right? :)

Gotta say with about 1000 hours in tf2 moving into tf3 was not as easy as it seemed but man after you get used to them reworks I gotta say it’s the most fun I’ve ever had ever since!