I am a bit curious as to the decisions behind the way foot movement is handled. One of my major beefs with d20 is that everybody is the same damn speed unless you specifically build to take advantage of things that can change that.
I always find it stretches believability for the 90 lbs weakling, 350lbs obese guy, and 160lbs trained athlete to all have the same assumed average movement rates. Running skill and what not aside, 25m over the course of 3 seconds is around 18-19mph. That's pretty damn good. Are there any common thoughts and approaches others take to this to vary it a bit more?