BE seems to be one of those games that I would really like to have but.. the rational decision is to wait for a couple of years. Why? Well apart from the obvious bugs and bad feedback, this is a decision fueled by the business model Firaxis is making their games. In this model BE is base of the product, that is to be completed with several DLC:s. On the other hand, BE does not seem to be "the big seller" in long run like Civ5. It is interim product that will make some money before the next big seller. There will be several DLC-packs for it anyway, and why not? Those will sell the game more. I would not be surprised if they take some of the Civ5 elements that were dropped out of BE, name them anew, and and introduce them back in next DLC as a new element. Eventually there will be sale for the "Complete Pack" and I will be expecting that sooner than it was with Civ5. That is when I buy BE. Of course, if BE would sell better than expected, then there may be more DLC:s, but even before that there will be sales of the base game when new DLC:s come out.