Feats, by and large, do not give options; they simply augment a character's existing abilities. Druids like feats because they have stuff like Natural Spell and Frozen Wildshape that makes their class features more useful. Wizards like feats because they have stuff like Uncanny Forethought that makes their class features more useful. Fighters don't have class features. The only way they benefit from feats are things that augment attacks and maneuvers (trip, charge, etc). And while expanding the number of feats they get would help them get more of these feat chains (maybe you'll be able to make a fighter that can trip AND charge!) that still doesn't solve the fighter's main problem, which is that the fighter's singular method of problem solving is walking up to something and hitting it, and if a problem can't be solved through walking and hitting, it's not a problem the fighter class can solve.