This mod is an enhanced version of Wings of Liberty, with new units, buildings, abilities and upgrades for all 3 StarCraft 2 races.

Here is a short list of a few planned units:

Protoss

? (Anti-biological unit, perhaps a Twilight Archon?) [Twilight Council/Templar Archives]
Dark Archon [Templar Archives]
Reaver [Robotics Support Bay]
? (Light air caster) [Air caster building]
Obelisk (Air caster building)

Terran

Firebat - may not see the light of day if it ends up being too similiar to the Hellion. [Merc Haven]
Spectre
Diamondback
APC that can lay Spider Mines - may not see the light of day either
Stingray AA fighter
Perdition Turret (Now requires Armory)
Merc Haven (for Reapers and upgrade)

Zerg

Lurker
Swarm Host
? (Heavy air unit)
Lurker Den

New abilities, depending on balance, might be included, such as the Battlecruiser upgrades from the campaign, the Immortality protocol for the Thor, the Command Center reactor, the bunker turret upgrade, a chain lightning ability for the High Templar, range upgrade for the Lurker, and so on.

NOTE: This mod, once released, can be modified at will and used in custom maps and other mods.

Wings of Liberty Enhanced