I understand players wanting more than what the class (or rules) give. To the player, it feels as if their fighters are inadequate when compared to other PC classes. And they can feel that way. But, since many many players don't feel that way, wouldn't it be better to discuss it as a houserule, and its possible outcomes, rather than a complaint?
That said, in my experience, those players will always want more. Regardless of a change, a houserule, or issuance of a magic item. They will always feel their character is underperforming.