1) While I like the changes to fighter, I don't think it solved the problem fighters have. Fighters don't need ways to do more damage, they just need a way to deliver the damage they can do.
Suggestions: An ability that allows them to move and still get a full attack. I don't think however this should be a feat, I believe all fighters should have this ability, and perhaps at later an ability that allows them to go through DT without problem.
2) Keep enemies from getting past them to keep them from getting to their friends.
Suggestion: Use the knight ability that makes the area around a fighter Difficult Terrain.
3) Fighters being front line fighters should have good fort but also good Reflex saves.
Suggestion: Also, like a rogue has Evasion, I think the fighter should have something that when they succeed a fort save, they take no damage, and when they fail they take 1/2 damage
4) I am not a fan of the combo feats. Most combat rarely lasts more than a few rounds, at which point alot of the combo feats become null and void.
5) With skill feats, I believe that allowing them to grant the bonus but also give both of the skills as "class skills" would be better as well.