Well I finally was able to beat Mass Effect 3 and see some of the new stuff that the extended cut added to the ending of Mass Effect 3 and overall I'd say I'm satisfied with it. For me personally it felt like this stuff should have been included in the original release of Mass Effect 3 as it help put to rest some of the questions and weird oddities that were in the original version to rest. While at the same time answering some of the questions that I had originally when I played through it. For me it help give a better understanding of how the crucible and the VI/holographic child fit into all this and how they entered the equation in the bigger realm of things. At the same time the VI elaborating more on the 3 main choices that are presented helped provide a greater sense of impact of the choices themselves.
Personally based on this DLC this is what the original ending of Mass Effect 3 should have been as it helps end the series on a bigger bang then the original ending did. However at the same time this DLC feels a bit late as Mass Effect 3 has been on the market for at least a good 3 months as off this writing. With that being said though this DLC does make the ending more interesting then it originally was and it is for free download so you can't argue with that.