Nine heat map overlays rendered into chart view: damage taken, losses, defence coverage, machine utilization, wasted capacity, turret ammo, accumulator charge, fluid fill and train congestion. Answers where to go next rather than what is happening. Colours are ordered by brightness, so severity reads without relying on colour vision. Collectors run only while someone is looking at a view that needs them, so an unopened overlay costs nothing.
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.