Ancalagon
Dusty Dragon
I think more people would take Commander's Strike if you didn't have to pay 3 to get 1.
A bonus action, attack and reaction is (very roughly) equal, for a fightery guy anyway.
The 3:1 ratio makes the ability very circumstantial indeed. Which isn't the same as worthless. Only "less worth" than most other maneuvers which you can control much more reliably.
Lower the cost to 2:1 and things start to look up.
Lower the cost to 1:1 and you're looking at the new Warlord...! [emoji6]
You (as the battle master) should be sacrificing an attack or a bonus action. I can't fathom why it's both, it makes no sense to me.