[Other] - Realistic Route Approval & Activation Workflow

:bullseye: What is your suggestion?
I propose replacing the current simplistic “one-click route opening” system with a realistic tiered approval mechanism.

This will transform route planning from a thoughtless action into the core strategic decision-making layer of the game.

Meanwhile, this system imposes zero changes to your core engine. All existing game assets, economic rules and underlying logic can be fully reused without modification.

:hammer_and_wrench: How would it work in the game?

​1. Select your target destination airport on the world map.

​2. Pick an airline to view its pre‑approved aircraft operation plans.

​3. Choose one aircraft plan to open the route approval application form.

​4. Set daily flight frequency and submit the application for landing rights.

​5. At low airport level: Pay wet‑lease related fees to launch the route.

​6. After upgrading to international standard: Receive landing license fees from the airline automatically.

7. Manage active routes: Switch between fixed aircraft flight or mixed aircraft rotation mode in the route management panel.

​Summary::radio_button:Purchase intention

- Early stage: Button = Purchase → Deduction of money (wet lease for exploration)(Green coins + Silver coins)

- Later stage: Button = Licensing → Collection of money (:airplane:landing licensing fee)

Core Game Logic Note

As an airport operator, you only approve landing & operation rights for foreign carriers. You have no authority to assign aircraft types or purchase airline fleets, which strictly aligns with real‑world civil aviation rules.(According to real-world airport operations)

Note: Airline Declaration Form content

Departure Airport: Auto-locked to the player’s current airport (non-editable)

Destination Airport: Auto-filled with the selected airport’s IATA code and city name (non-editable)

Route Type: Auto-detected (Domestic/Regional/Intercontinental) but manually adjustable

Operating Airline: Auto-filled with the selected airline (non-editable)

Aircraft Type: Dropdown menu showing only aircraft types supported by both the airline and the player’s airport

​Daily Frequency: Dropdown menu with maximum value limited by available stands and airport capacity

​Belly Cargo Capacity: Checkbox to enable passenger aircraft belly cargo (automatically calculates available cargo volume based on aircraft type)

​Code-Sharing Partners: Checkboxes for up to 3 same-alliance airlines (each adds demand and revenue but increases approval difficulty)

:balance_scale: Why is this a good idea?

1.Turns route planning into real strategy — Replaces mindless one-click actions with meaningful decisions that make players feel like actual airport managers.

​2. Perfectly fits your current roadmap — Builds directly on top of the new demand system, ground handling overhaul and cargo rework you’re already developing.

​3. Massively increases replay value — Every airport will have unique strengths, available routes and playstyles, making each playthrough feel fresh and different.

:camera_with_flash: Optional: Image or reference