Futuristic Warfare or Boots on the Ground?

The Call of Duty series has been a "boots on the ground" First Person Shooter for most of the series up until Call of Duty: Advanced Warfare, produced by Sledge Hammer Games. When Advanced Warfare was announced, the Call of Duty community split in two. Many people opposed the new futuristic approach that was being taken. The most recently game from the serious is based off of the WW2 era, and brought back the "boots on the ground" experience many people have been begging for. So, what's your opinion on the matter? Do you prefer Sci-fi tech with exo-suits, or traditional CQB boots on the ground?