Swaps all of the units and visual effects around so that all three factions can be played. The balance changes included in the mod address numerous long standing complaints about the original game while the faction swap provides a fresh experience to the gameplay. The mod has been built from scratch with full compatibility on all maps and missions in mind: Any map that worked with the original game will work with this mod. The campaign can also be played either as it was in the original (with the new balance changes included), or by using the previously inaccessible Terran units instead.
Here's the new (optional) skirmish screen layout bundled with version 4. Note the dropdown menu comfortably fits all 12 AI profiles without having to use a scrollbar. And are those new AIs you ask? Why yes they are.