I want a warlord, I just want it to be a fighter subclass (and there has been some excellent ideas in this thread how to do just that.)
They tried with the Battlemaster and the Banneret and all we got were half-baked ideas that feel like someone took multi class feats and not a full on Warlord. Honestly, it should be the other way around: the Fighter should be a subclass of the Warlord, but you don't actually call it 'Warlord'.
In older editions, the Fighter ended up with a keep and followers, and you had the Leadership feat in 3.X that gave you a cohort... the Warlord was just the realization of that concept into modern rules by having you be able to synergies with the other players. I think the Warlord is what the Fighting Man should have always aimed to be, but was robbed by Magic and the Thief of anything but its 'bash it with a sword' basic ability. The Fighter was always meant to be the Leader.
Imagine a core Fighter that has Superiority Dice as its main class feature that they can use to help others, but the Champion subclass gains a Smite-like ability to just spend the dice on themselves to keep it simple so you can just bash away and throw extra dice whenever. And then the various subclasses would have different way to use Superiority Dice.
I think the 3.x "You get lots of FEATS!" and the whole "Fighter is a simple class for beginners lol" thing just pollutes the Fighter class' concept and make it far less interesting than it should be. It's been held back for the sake of a truly boring tradition.