TL;DR
With an airplane, player can setup a new colony far away from the origin in late game.What ?
In late game, expanding by building rails and place miners are boring and painful. Building a colony in a much rich place far away from origin is more efficient.It plays like a new game with rich resource + death world + all tech on. Player can play in the same map by building a colony, and spend more hours before get bored again.
(Yes, it is game.player.teleport, but teleport is not fun.)
My idea is adding an airplane:
Airplane can travel at 1000km/h.
Airplane can only take off from or land on a runway / airport.
Airplane can forced-land on any plane surface where has no lakes, trees, enemies or any buildings.
Airplane can forced-land by user request or when it is out of fuel. But still requires a runway to take off.
Airplane can circle around a chart tag location.
Airplane can airdrop items during circling for emergency supply.
Airplane can airdrop bombs during circling to destroy enemies and trees.
Player can jump out of airplane with parachute during circling.
Airplane has a small cargo grid.
Airplane will be attacked if it is flying at low altitude, e.g., during landing, long time circling.
Airplane can be scheduled to travel between airports, and airdrop items at a chart tag location.
Chunks underneath the airline are NOT generated.
Only one type of airplane is sufficient.
So, to build a colony:
1. Send an airplane to a chart tag location far away, to detect terrain and resources.
2. Send an airplane to bomb all enemies and trees at the selected location.
3. Take on the airplane and fly to the new location.
4. Jump out of the airplane with parachute at new location. Airplane leaves and returns to base.
5. Start building the new base.
6. Call airplane to airdrop emergency supplies if necessary.
7. Player can get back to airplane after an new airport is built.
Why ?
I found some mod that are already have aircraft. But my idea is improving late game experience only, without interfering early game and mid game.So, my airplane is designed to travel fast and far away, but not for transportation or killing.
Airplane may be also useful if new terrain in 0.16 contains mountains and oceans.
This also makes building mega factory more easier without mods.