A Battlecruiser had a  choice of Yamato Cannon, Missile Barrage, or Defensive Matrix. Once chosen it can't switch. Upgrading the Battlecruiser is very quick and can't be undone.

A Battlecruiser had a  choice of Yamato Cannon, Missile Barrage, or Defensive Matrix. Once chosen it can't switch. Upgrading the Battlecruiser is very quick and can't be undone. 

A Battlecruiser had a  choice of Yamato Cannon, Missile Barrage, or Defensive Matrix. Once chosen it can't switch. Upgrading the Battlecruiser is very quick and can't be undone.

Doubles Battlecruiser movement speed and increases acceleration of the Battlecruiser for 6 seconds. Cost 100 energy. Deals extra damage against ground enemies when active (+10)

Would allow Battlecruisers to build tac fighters much like the Hyperion in Heart of the Swarm

An area-of-effect air-to-ground weapon which dealt damage over time and was effective against weak swarming units (like Marines and Zerglings).  It added multiple small barrels to the front of the ship's hammerhead.

A ability originally used by the ghost to call down a group of marines to the battlefield 

Allows Siege Tanks to be carried by Medivacs in Siege Mode. This was later given to Mengsk in CO-OP

Convert the Predator Fighter into Interceptor Mode. In this mode it will attempt to shoot down incoming fire.

Medic ability, can reveal terrain over cliffs, lasts 10 sec, not a detector 

Terran ability that allows a hero or other unit to hack in mechanical units or machines

Allows Ghosts and Spectres to lockdown mechanical targets

Allows Hercules to land in order to pick up forces.  There was concept for it being able to produce units while landed as well.

Early version of Nano Repair

Cut icon used for Terran building armor

Icon used for units with Super Heavy Armor such as the Battlecruiser and Thor

Icon used for units with Heavy Armor such as the Hercules and Siege Tank

Icon used for units with Medium Armor such as the Marauder and Goliath

Icon used for units with Light Armor such as the Medivac Dropship, Raven, Auto Turret, Viking, Banshee, Science Vessel and Hellion

This seems to be an icon used for Terran armor. In this case units with no armor such as Ghost, Hellion, Mule, Reaper, SCV and Point Defense Drone

Allows the Wraith and Banshee to sustain their cloak for longer periods of time. 

Allows Thors to utilize their shoulder guns

Increases the range of Marines attack

Transforms Sensor Tower into Radar Tower

Originally available for all Terran structures

Increase the range of Viking anti-air attacks by 2

Now known as Kinetic Foam this is the unused icon for its previous version

This attack, which can only target biological units, deals 20 damage + 80 damage vs psionic opponents.

Ghosts passively detect units with an energy bar, even within the fog of war, up to a range of 30. This does not enable them to target or Snipe opponents within the fog of war.

Grants Ghosts 2 bonus attack range

Increases the ghost's starting energy by 25. 

Increases the radius of Ghost's EMP Round from 1.5 to 2 (+0.5).

Increase Spectre damage against armored units by 5

Drains half the life from a friendly biological unit giving the Spectre two energy for each point of life drained. 

Spectres produce false copies of units to distract opponents. 

Enabled the Banshee to deal 25% more damage while cloaked

Increased Banshee base movement speed and acceleration by 25% when cloaked

Increases the starting energy of the Battlecruiser by 25. 

Cut Hyperion Armory upgrade for Hellions

+1 damage/sec for 3 seconds 

Cut Hyperion Armory upgrade for Hellions

Movement speed +40% 

Cut Hyperion Armory upgrade for Hellions

Increases damage of Napalm Fuel Tanks

Cut Hyperion Armory upgrade for Firebats

Damage +2, duration 4 seconds 

Increases Medivac healing rate

Increase Medivac cargo capacity

Increases the starting energy of the Medivac by 25

Increases the Seeker Missile's unit tracking range by 50% (13 to 19.5) and the damage by 30%. 

Decreases the cooldown of Ignite Afterburners from 14 to 9, and increase the Medivac's base movement speed from 3.5 to 4.13.

Increases the damage of auto-turrets and seeker missiles by 30%.

Increases the Raven's Anti-Armor Missile explosion radius by 20% and its tracking range by 50%. 

Increases the starting energy of the Raven by 25 

Raven's anti-mechanical unit ability that temporarily disables all weapons and unit abilities

Raven missile that pursues the target unit, dealing 30 damage on impact and reducing armor by 3 for a short duration

The drone intercepts missiles and projectiles fired by certain enemy units and buildings.

The repair drone is a deployable timed-life unit that is unable to move, but has a repair beam that restores the health of a nearby friendly mechanical unit. Cut from multiplayer games.

Enables Reapers to see up cliffs/highground

Increases the Reapers damage, researched from Fusion Core

Thor ability, after losing a certain amount of HP, where it could still attack. At a cost of 100 minerals and 50 gas, it could move once more

Gives the Thor a powerful anti-air attack that did splash damage.

Increases the range of the Planetary Fortress +1

All Terran buildings (even Planetary Fortress)  use to have a Lift Off ability before Blizzard decided only production structures should lift off

Adds +2 armored damage to each of the Cyclone's missiles during Lock On

Gives the Thor an aerial spider mine ability, in order to allow it to better defend mineral clusters

Deploys a Targeting Drone to shine a laser on a enemy target for a +50% damage boost

Allows the Diamondback to fire a charged up shot every five seconds

+20% attack speed

+1 Attack Range for the Diamondback

Nomad ability, slows down ground units by 50% and stops Zerg units from burrowing

Cut Hyperion Armory upgrade for buildings, costs 45,000 credits

Reduces Building costs by 10%

Homebrew Stimpack made from methamphetamine, cocaine, and rocket fuel.  Temporarily increases attack speed by a large amount and causes Tychus attacks to do splash damage to nearby targets. Causes 10 damage when used

The early concept for the Firebat's Incinerator Gauntlets

Cut Hyperion Armory upgrade for SCVs, costs 60,000 credits

Reduces SCV cost (-15 minerals)

Cut Hyperion Armory upgrade for SCVs, costs 35,000 credits

Reduces Repair costs by 25%

Cut Hyperion Armory upgrade for Missile Turrets

Missile Turret gains an alternate attack with range 8 that deals 50 damage 

Cut Hyperion Armory upgrade for Perdition Turret

Perdition Turret gains detection

Cut Hyperion Armory upgrade for Medics

Medics heal an area around their target 

Cut Protoss research from the Hyperion Laboratory

+1 Armor for All Vehicles 

Thor Shoulder Guns