Yeah, see, the way I look at it, is it doesn't really matter. My Shepherd doesn't exist anymore. While I would like to find out what the total ramifications were, in the end, it doesn't matter. So yes, I am perfectly "satisfied" by the ending, because I thought that it was important to "understand" what it was that led to all the attacks by the reapers, and that I stopped it. I'm not going to go into details, but I am "happy" with my choice. Does it really matter if any of my crewmates survived? No, not at all. It was the galaxy that faced "destruction" (or more appropriately, violent culling). So, while it might be neat to know if Samara survived or not, it doesn't really matter. Did millions die with the destruction of the mass relays? Maybe. But does it really matter? No. Because those are millions that would have been killed anyway, had the reapers continued (maybe not all, but many). As it was, there was plenty of destruction going on at the time, and it was understood that many would end up dead. So, while it would be neat to know if Thessia recovered quickly, or Paladium was saved, it truly doesn't matter. In the end, there was survival.
In any event, they already said that the new "DLC" will answer many of those questions, so great. I didn't need those answers, but apparently many other people felt like they do. And it's free, so they're getting it.
Those same people would have complained for months if they had said, "You know what? We're going to delay the release another couple months, so we can finalize some things." It was a lose-lose for them, and they decided to not push it further. These things happen in gaming, especially RPGs, where there are story arcs that have to get tied together. As someone that has been playing RPGs since 1995 or so, I'm pretty accustomed to it, and take it in stride.
I'm just happy they finished ME3, at all. I had really looked forward to Dragon Age, and was pretty disappointed by it. I didn't even buy Dragon Age 2, and will wait to see if I'll purchase Dragon Age 3. I like fantasy much more than sci-fi, yet the title I was most looking forward to severely disappointed me. I have pretty much given up hope of there ever being a KOTOR 3, and have absolutely no reason to believe I will ever see another game in the Arcanum universe. Such is life.