Never played the original minigame, but it sounds like something that'd be entertaining for a bit, I guess. Still, I have to agree with the whole "40 bucks for a glorified minigame" criticisms. Really, the main reason I'd want to get it is because I like unlocking stuff. I guess it's that same primitive part of my brain that allows Skinner boxes to work so well.
Anyway, I'm wondering how this game is going to do sales-wise. I mean, does their whole "no save erasure" scheme actually net them any profit? Nearest I can see, all it would do is gyp paying customers and retailers. I mean, if I were to get this game in the first place, I probably wouldn't get it until the price went down, and by then, it may be nigh impossible to get my hands on a new copy.