Fanaelialae
Legend
Maybe, similar to the Warlock (Patron and Pact Boon), the Fighter could essentially get two subclasses. The second might be chosen at a later level, not unlike the Paragon Paths of 4e. This higher level subclass could supplement the fighter's capabilities. You might have a Mercenary Captain path that commands followers, a Legacy Wielder that gets a weapon of legacy that improves as they level, or a Heavenly Scion that unlocks the power in their blood from a divine lineage. These might have some combat abilities, but would ideally be focused on expanding the fighter's utility. Barbarians might also get similar options (or even reuse the same subclasses, to save on design space).
This would allow a range of options, from the mundane to the supernatural, which could cater to a broader range of preferences.
This would allow a range of options, from the mundane to the supernatural, which could cater to a broader range of preferences.