That's where I disagree with you. The advanced mechanics and abilities of the futuristic shooters keeps things fast paced and exciting (if that's your thing) so long as the maps aren't atrociously huge. My all time favorite FPS is Call of Duty 4: Modern Warfare (and now Modern Warfare Remastered). It's slower paced with appropriate sized maps and very realistic.
Modern Warfare 2 was always my go to, I felt they took all the good things from the first one and slightly improved upon them. Havent played that game in probably 8 years though.