I loved SMAC, loved Civ4, loved Galciv 2, currently loving Civ5. I basically want SMAC except updated and improved. I think Civ5 was done really well, and I wouldn't mind sci fi Civ5. I hate a game being too easy though, and I've heard BE is way too easy. I can overlook some minor things as long as it's challenging. I don't really min max anything, but I do find a good challenge at civ 5s highest difficulties.