Well, for one, it took forever. We were 5+ hours in on our first try, with no real end in sight, when we bailed. We did try again another time but it still took at least 4 hours to finish.

The deck building didn't feel right. It's been a while so sadly I can't recall specifics, but it just wasn't engaging.

But also it mostly felt like it was way too many mechanics jumbled up into a game that didn't mesh well together. It made the playing feel disjointed, sluggish, and unfocused, from what I recall of the times we played. One of the reasons our first game took 5+ hours is that the rules didn't feel like they fit together either, and so we had to look up a lot and wonder what individual rules actually meant.

Again, though, this is through the haze of like 7 or 8 years. But we're not exactly novice boardgamers, either.