Not really, there a plenty of weeks Dragon/Dungeon has things I can't use, right now. I've not been running D&D for nearly a year but I renewed my subscription, last time. It's more a case that I can see them using Unearth Arcana to hide the fact they have nothing else. They should be delivering the content as advertised when we signed up for Dragon/Dungeon and their integration to the D&D Insider, once they do that, then they can offer extras.
Of course it's better than nothing at all but that doesn't make it good enough, to fill in for properly developed and supported material we should be getting.