Nice variant on the fighter. I made one like this a few years back. There's more alike than not. :)
Agile Fighter (fighter)
Skills: Acrobatics (Dex) and Escape Artist (Dex) are class
skills for an agile fighter.
Weapon and Armor Proficiencies: An agile fighter is
not proficient with medium and heavy armor or with tower
Deft Movement (Ex): An agile fighter gains Dodge and
Mobility as bonus feats, even if he does not meet the
prerequisites. He does not gain the benefits of these feats
when his speed is reduced due to armor or encumbrance.
This replaces his bonus feat at 1st level.
Burst of Speed (Ex): Beginning at 2nd level, an agile
fighter can move his speed as a swift action. He can use this
ability once per day. At 6th level and every four levels
thereafter, the an agile fighter can use this ability one
additional time per day.
This replaces Bravery.
Nimble (Ex): Beginning at 3rd level, an agile fighter gains
a +1 dodge bonus to AC. At 7th level and every four levels
thereafter, this bonus increases by +1. He looses this bonus
when he wears medium or heavy armor or carries a
medium or heavy load.
This replaces armor training 1, 2, 3 and 4, and armor mastery.