The Fighter isn't supposed to be a guard or a wrestler - he's supposed to be The Goddamned Fighter.
He's Conan, and Hercules, and Gilgamesh, and he's all of those goddamn things before he hits level 20, because comparable Wizard figures from mythology, Merlin, Ahriman, etc, with a few exceptions, rarely seem in DnD terms to get above 12th level.
Here's what the Fighter needs to do in order to fulfil that archetype.
1. He needs to be immune to things. Iron Heart Surge-like effect comes online at level
3, because that is when Wizards get wide-area save-or-sucks and individually targeted save-or-dies. He needs to be immune to SO MANY THINGS. He needs to be able to turn being blinded into hp damage, and rip through motherfucking illusions with his BARE HANDS.
2. He needs to be able to monkeywrench things. Spellcaster's whipping out components? NONE OF THAT. Beholder is trying to disintegrate the rogue? NONE OF THAT. Sea monster's eating his girlfriend? NONE. OF. FUCKING. THAT.
3. He needs to have magic items. Not buy them. Have them. Does he forge them? Does he steal them from gods? Do people just literally HAND him stuff? I don't know! But he needs to be handed items, or possibly pick them off some sort of list, that give him things like luck bonuses to saving throws, flight, etherealness, burrowing, insight bonus to AC, Fireball as a swift action str+con mod times per day, energy immunity, planar bound servants, and EVEN MORE FUCKING IMMUNITIES.
4. He needs some Goddamn skillpoints. A Goddamned Fighter is specifically and explicitly a master of physical movement, a student of war, a tactical genius, knowledgeable about monsters, and either knows enough about weapons and armour to clean them properly, or enough to forge ILHAROS, HAMMER OF THE GODS, using only random rocks and sheer CHUTZPAH.
5. Hit points. He not only needs more of them than ANYONE ELSE, he needs to both regenerate them and use them as a resource. Blinded? Nope, that's 10hp off. Petrified? Nah-ah, that's 20hp off. Frozen? Immune. Dazed? Hah, as if. 5hp. Power attack for 500hp? Weapon damage only, i'm afraid. So that's 6hp. So, what, you're going to attack the buffed wizard for some piddly damage and miss anyway? Nope. 10hp to ignore miss chances, 20hp to ignore magical sources of AC, 30hp to add my level to damage twice... yep. Your GODDAMN WIZARD IS DEAD. 'CAUSE I'M THE GODDAMNED FIGHTER, BITCH!
* (The barbarian has a bit less hp, but regens it REALLY FAST. He's basically a Troll.)
6. Leader of Men. You can take your Goddamned leadership feat and SHOVE IT UP YOUR ASS. A Goddamned Fighter not ONLY can gather a large army from seemingly NOTHING if he has some kind of goal that NEEDS an army, he gives that army all KINDS of STUPID bonuses. A troop of twenty crossbowmen on a hillside can't even SCRATCH a dragon, but a troop of twenty crossbowmen with a GODDAMNED FIGHTER in charge can not only feather that goddamned dragon from it's scaly nose all the way to it's scaly arse, they look GODDAMNED STYLISH doing it!
So for the love of pete. Please stop arguing about whether you should be giving the fighter a +2 or a +4 bonus on special attack actions. Because GIVING A MINOR NUMERICAL BONUS TO THE FIGHTER CLASS DOES NOT AND WILL NOT FIX THE BASIC DESIGN FLAWS INHERENT IN IT'S DESIGN.
Oh, and also.
I think it's enough.
It's not FER GOD'S SAKE enough. And it bloody WON'T BE til you arse-backwards BASTARDS pull your fingers out and actually UNDERSTAND SOME GODDAMN DESIGN PARADIGMS.