Tony Vargas
Legend
I suppose I did make four quite different points there. The one about sub-class is an aside, the BM and PDK are failures a warlord substitutes, but that, alone,doesn't mean a completely new class just built on the same sort of template would be....I’m not sure what any of this even means. The subclasses would just add more support to the base class, not interfere, while the more offensive subs would steer it more toward An offense/support split.
...to be clear, it would necessarily fail, unless you essentially changed the template in the process, but it sounds like you might be willing to go there.
You can replace a feature, sure. But the structure of the class puts most of it's effectiveness in at-will features (most dramatically Extra Attack), which aren't that versatile, so you'd just end up with a class that contributes too much of whatever that one support feature is, most of the time (including when it's not needed, at all), enough some of the time, and not enough when it matters most. And fails to contribute when other sorts of support would be helpful.and replacing the features with similarly themed and structured features that provide support wouldn’t be hard, as I’ve shown.
The fighter gets away with it's inflexible structure because it is contributing the most design-valued, fungible, universally called for in combat thing in the game: single-target DPR.