The fighter as intended was supposed to work the way you described, but the thing is, a generic fighter that's capable of performing all of the roles you described (perhaps not all at once), would quickly become the go-to class for any melee or ranged build.
Untrue, one class having capabilities does not prevent other classes from exercising theirs.
Lets take the core Fighting classes for a whirl now:
Barbarian: As the primitive warrior archetype, the barbarian naturally, comes with a pack of survival, mobility, and SOME of the sensory and diplomatic skills, with the advantage of actually having skill points to invest in them. These are non-exclusive capabilities. However, the Barbarian is also straight out better than even the expanded fighter in the following attributes, mobility(by having a movement speed bonus and Rage, the Barbarian will outclass a Fighter in feats of athleticism), durability(having a larger hit dice and a combat-time bonus to Con) and straight martial damage.
The expanded Fighter will beat it in the realms of tactics, leadership, senses(somewhat), stealth and diplomatic ability, while also focusing more heavily on feat intensive fighting styles over raw stats.
Paladin: As the divine warrior archetype, the paladin has selective, but potent focused offense, actual spells, a buttload of defense and the suite of social skills, plus the charisma to use them with. Again, the enhanced fighter would trump it in terms of tactics, stealth and nature survival skills, but is going to be way behind on the socials and the healing, not to mention no matter how you spec for it the paladin is going to be the better mounted warrior. Senses wise, they're good at different kinds, Detect Evil is going to be pretty boss for finding potential enemies, but it won't be any good beyond that.
Ranger: The nature warrior archetype, with a full suite of senses, mobility, stealth, potential mount, feat based combat and perception skills. Here, it seems the enhanced fighter is going to be eating into a niche! However, as with the paladin, the Ranger is going to be better at senses (higher Wis + sensory spells), mobility(damned spells again), stealth(spells again
), mounted combat (animal companion) and perception(spells~), though probably not all at the same time. Its combat niche meanwhile, is giving access to a range of feats with waived ability prereqs, as well as a more narrow version of the paladin's hate-on. Skill wise, unless the Fighter suddenly got a lot more skill points to work with, its a foregone conclusion that the ranger will have a better skill setup, though diminished by the multiply redundant skills.
The Fighter would be better at the leadership and diplomatic stuff, as well as tactics. Combat wise the fighter is more flexible, barring niche setups to sacrifice Dex for Str
Overall, giving the fighter out of combat stuff barely begins to eat into the niche of the other fighting classes. They are more specialized, and more attuned to these tricks than the Fighter is, especially with the partial casters backing up their chosen focus with spells. The only one who might be threatened is the barbarian, which is more an asskicker than a survivalist. And the barbarian kicks ass in a distinctly different manner from the fighter, using raw stat bonuses.