I think the problem was they wanted an all new fan base. But most of the heat comes from traditional civ gamers, who feel left out in the cold, with this dumbed down version of civ as it is called. They should have catered to the already present fanbase. New gamers will learn how to play, we are not a world of simpletons, isn't it better to have the game a bit more complicated. Civ 4 BTS evolved and had layers of elements that civ 5 is missing at this point. Most including myself figured Civ 5 would take up the next level of evolution of civ gaming. Instead it reverted in many ways. I truly hope the reason is because Civ 5 is different, with a whole new outlook and the complication is added through expansion packs and dlcs so it eventually surpasses civ 4. I hope in the end it as at least as good as civ 4. A newer game should always be better than its predecessor!