By forgoing an attack or spending an additional superiority die you may declare your maneuver dramatic such a maneuver will affect multiple allies and enemies (only the non-damaging effects) nearby which see the maneuver.
For example your menacing attack may now inflict fear in enemies within range.
For example your rallying cry may now affect allies within range.
Or even your push maneuver now pushes or induces movement in more than one enemy
Obviously not a finished idea nor am I sure about the numbers but captures enhancing existing maneuvers with a coherent visualization similar to (scanning for openings in that regards)
Note that forgoing an attack mechanic is sort of an implicit form of level gating the action surge allows one to have more resources therefore overcoming that limit for a bit which is I think an interestingly flexible trick i have seen some who created explicit level gates on maneuvers I think it is less satisfying.