Label name conventions?
This is just a proposal, if you have ideas feel free to edit/comment
USE_HOVER, USE_VTOL
AIs and other scripts can't see the map, so it would be useful if you could give them a hint as to what propulsion types will work best on your map.
An alternate approach has been suggested: propulsionCanReach()
VTOL_PATROL_X
AREA object where VTOLs should patrol (between x1,y1 and x2,y2).
LAND_PATROL_X
Similar to above, but for land units.
SENSOR_X
AREA or POSITION object indicating strategic location for a sensor.
INDIRECT_X
AREA or POSITION object indicating good place to put artillery and other indirect ranged weapons.
WALL_X
AREA object indicating to build walls within the contained tiles (if either height or width == 1) or build walls in a line between x1,y1 and x2,y2.
CHOKE_X
AREA or POSITION object indicating a choke point.
RALLY_X
AREA or POSITION object indicating a good place to rally troops before attacking an enemy base. For example, this might be on some mountain path that otherwise the AI might completely ignore.