Here are two particular insulting examples, the Mobile Fighter and Tactician Archetypes (insulting in the sense that they should be valid sort of character, but because this is PF, they aren't).
SpoilerOh, look, more numbers. Because that's what the fighter needed.Originally Posted by PFSRD, Mobile Fighter Archetype
So this is just the ability it replaced but only usable with this variant's crappy abilities, I guess?Originally Posted by PFSRD, Mobile Fighter Archetype
Oh, look, an ability so bad it may as well not even exist.Originally Posted by PFSRD, Mobile Fighter Archetype
... I don't even know how to respond to this. +10 move speed, take 10, and occasionally take 20. At level 15. What is this I don't evenOriginally Posted by PFSRD, Mobile Fighter Archetype
Yes, well, things that should be standard to pretty much everybody being presented as capstones for a crappy variant class? That pretty much makes my point for me.Originally Posted by PFSRD, Mobile Fighter Archetype
SpoilerThis is actually pretty cool! Which is why it's setting us up for disappointment.Originally Posted by PFSRD, Tactician Archetype
So, the fighter's signature non-ability is slightly more versatile. Uh, okay. That's good I guess.Originally Posted by PFSRD, Tactician Archetype
Well, numbers, but at least they're somewhat unusual numbers. So that's at least an improvement. Still boring, though.Originally Posted by PFSRD, Tactician Archetype
Another bonus feat, and an ability which lets you waste your standard action. Joy.Originally Posted by PFSRD, Tactician Archetype
Another waste of a standard action! Wooooooo.Originally Posted by PFSRD, Tactician Archetype
Yet another case of too little, too late.Originally Posted by PFSRD, Tactician Archetype
These abilities are generally well-balanced against what the PF fighter already has, of course, and therein lies the problem. What the default fighter has is so generic that it has to be meaningless, and so whatever ACFs are supplied to it have to be insultingly bad by relation. The draw of this is that no, alternate class features are not enough to make a fighter class distinct, or interesting, because the fighter has to be distinct and interesting to start with.
And if the fighter has to be distinct and interesting to start with, than we get back to the basic problem — that "fighter" is an absurdly broad concept, one that is necessarily bad because it has no idea what it actually is (and neither does anyone writing it).