Sins of a Solar Empire is often described as a 4XRTS game, or a game that tried to merge the action and tactics packed gameplay of a Real time strategy game with the deep, complex, empire wide strategy of a 4X turn based game. It's up to debate whether Sins succeeded in this goal, but I think all can agree that of the 4Xs of "explore, expand, exploit, and exterminate", Sins is much more focused on the exterminate than on the others. This mod seeks to give more depth to the other 3Xs of the game by adding additional game elements or refining the existing ones to reward players who give more strategic thought to the non-combat side of the game. Combat will still be the center point of the game, but players will find that the non-combat options available will be much more rewarding. Spying, exploring, sabotage, diplomacy, culture, and economic development have all been added or changed in innovative new ways. Regardless of what you think Sins is, this is the 4XRTS it should have been.
E4X has been updated to be compatible with version 1.04, with some major balance changes.
Posted by GoaFan77 on Sep 11th, 2012
Enhanced 4X version 1.45 has been released. In addition to bringing it up to date to the latest version of Rebellion, it also adds most of the changes to defensive structures detailed here. See the changelong here or in the readme for more information.
Full Disclosure: This release may not be entirely bug free, I only tested it in two games, one of which I encounter a reoccurring minidump but could not figure out its cause. If you run into any problems, please post in the bugs forum.