I can't speak to the content, but at least they answered a number of the questions/glaringly obvious holes that were in the original (Like, for example, what the hell was up with the fleet of homeless aliens now floating around Earth - in the extended endings it at least makes it clear that they bugged out and the Normandy was the last, or one of the last, to leave - hence why it got caught in the blast wave). That said, though, the Control ending was a bit too shiny happy for my tastes and the Refusal ending - as much as I like the idea of telling glow blue brat to shove it up his digital ass - seems kind of pointless.