I wouldn't call advanced movement "speeding up Quake". Speed in Quake and other FPS is an important factor that influences what you based on the speed that you have. Bunny hopping, air control, rocket jumps are not as useful when the base speed goes up. Also, less maneuverability, like in Quake 2, and bigger maps, mean that you have to be more judicious about your next move, and plan ahead more, stock up on more items, etc. There is an important balance to these things.