Is it really a 'nice thing' when you put it on a shelf so high (10th level) that they'll rarely ever get them?
Most of this also kind of misses my point: I want the fighter to have cool things to do, not just more power in the form of big numbers and die rolls. I want Battlemaster maneuvers at-will and better ones to pick from at higher levels not locked behind a single subclass for the purpose of pushing one really terrible one.
It's not about power, it's about versatility beyond Attack Attack Attack.