I've had more time to think it over now. After the initial disappointment of "that's it?" wore off, I think I'm more satisfied than I was initially. That said, I think I stand by pretty much all of what I wrote here. I really, really like this game, but the price is just too high. I'm glad I have it, but I do believe that the cost is a valid reason to pass it up. There are a few things I would like to elaborate on, and a few comments here I want to respond to, but I don;t want to deal with trying to format a long reply with several quote in this terrible editor.
I'm going to play the game some more, see just how much I can do without any of the expansions. So far I've only done the bare minimum of the game, I haven't even bothered trying to get the minikits nor have I spent more than a minute or two in the three hub worlds that came with the base set. Who knows, maybe there actually is more content there than I gave it credit for.